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Posted by O3marchnative 12 hours ago

Missile defense is NP-complete(smu160.github.io)
266 points | 283 comments
jsw97 12 hours ago|
The author explains that this problem is actually adversarial, in the sense that the attacker gets to observe defenses and allocate warheads and decoys accordingly.

Thinking of our current circumstances, this suggests another cost of war: our offensive capabilities, as well as our defensive capabilities become more observable. Our adversaries are studying our strengths and weaknesses in Iran, and they will have a much improved game plan for countering us in future conflicts.

myrmidon 12 hours ago||
This is absolutely true, but there is a strong counterpoint: You also learn the limits of your own systems and how to operate them most effectively yourself (and better than adversaries can, too).

Just to pick a recent example: Russian air defense in the early stages of the Ukraine war was dismal (more specifically: defense against big, slow drones like Bayraktar), despite having sufficient AA capability "on paper"-- the war allowed them to visibly improve.

I'd expect much more value from validating and improving your equipment and its handling than the actual "cost" of revealing its capabilities to adversaries in almost every conflict.

dlisboa 11 hours ago|||
There is an assumption here that the value in improving defenses is the same as improving offensive weapons. That is not the case in the assymetry that drones provide and Russia is the first example.

Russia has not been able to improve AA capabilities to the point where it's "safe", for any definition of the word, neither has Israel. Israel and Gulf states often tout over 90% interception rate yet it's really at the mercy of Iran to not target their most vulnerable sites. If Iran was routinely targeting desalination plants and refineries it wouldn't matter if it was 99%: one hit is all it takes. Similarly Russia cannot keep Ukraine from targeting their oil infrastructure.

Air defenses need to be 100% to prevent physical, economic and moral damage. That is an impossibility.

lumost 6 hours ago|||
I don't see how drones don't make all conflicts into WW1. 100 Billion dollars buys about 3.3 million Shaheds assuming the manufacturing is not made more efficient. There are many questions on whether its possible to spend 100 billion dollars on Shaheds, or launch all of them. But this is more than enough to destroy any logistics and transportation infrastructure necessary for a ground invasion.

There are many many countries who can afford 100 billion dollars for stored military equipment that has a long shelf life. The US makes ~50k artillery shells a month at a cost of about 10k per shell.

andrewflnr 1 hour ago|||
I think that what makes it not WWI is that not even trenches really save you from precision munitions.
2001zhaozhao 3 hours ago||||
From my extremely uneducated point of view it seems like that is true and probably what is already happening in Ukraine. However, at some point robots might be able to take and hold ground, and maybe they can be designed to require only decentralized, automated infrastructure to operate that is hard to strike economically even with drones. At that point, may the side with the most robots win.
Cpoll 5 hours ago|||
> US makes ~50k artillery shells a month at a cost of about 10k per shell.

50000 * 10000 * 12 is 6B/year. I was surprised, but I suppose that passes the smell test for a ~1T/year defense budget.

rdtsc 5 hours ago||
Now imagine for the same $10k cost making a cruise missile, instead. This is close to what a Shahed is -- the estimate is $20k-$50k / unit, so close enough.

This is bonkers. Countries can now afford for the same cost * to make not a 10-20 mile range artillery shell, but a 1500 mile effective range cruise missile.

* Defense costs are "fake" to a large degree. A lot of that is really corruption with money flowing from the taxpayers to the arms manufacturers, but still if we go by the numbers...

pyuser583 4 hours ago|||
They are fake in the sense individual items are listed as having costs that are not accurate.

But really the defense deals are very complicated, and not based around buying x number of items.

You’re making a not well-formed query. How much is a shell?

Adam Smith pointed out the first pencil costs thousands of dollars, but the second is mostly free. Same dynamic here, but multipled by a thousand.

rdtsc 4 hours ago||
> Adam Smith pointed out the first pencil costs thousands of dollars, but the second is mostly free. Same dynamic here, but multipled by a thousand.

The shells are already made by the 10 and 100s of thousands, Shaheds are also not a research project, so either one is in amortized serial production now.

What I meant is that a $10k shell doesn't cost that much. Russians are making the equivalent artillery shells for an _order_ of magnitude less for around $1k. A lot of defense costs are just overinflated simply because they can be. The government is spending taxpayer money, it's not really coming from the politicians' pockets. If the kickbacks are just right, they may in fact flow back into the politicians pockets.

fpoling 2 hours ago|||
It is vastly more complicated to find targets at 1500 miles than at 20. So drones are effective at destroying big stationary civilian infrastructure and much less at long distance strikes at military targets. Russia's inability to destroy Ukrainian aviation is a good example.

But then with solar and batteries civilian infrastructure becomes much more resilient against drone strikes.

rdtsc 1 hour ago||
> It is vastly more complicated to find targets at 1500 miles than at 20.

It's true but they are so cheap that launching a whole bunch and/or improving them incrementally is possible. Yeah they are for stationary targets mostly, for sure. And of course their sounds and relatively low speed does make them somewhat easier to shoot down with short range AA guns and can have automated acoustic early warning system (it's like a flying lawnmower or chainsaw).

icegreentea2 11 hours ago||||
Air defenses do not need to be 100% effective to be... effective.

Russia cannot keep Ukraine from targeting their oil infrastructure, yet here Russia is, still fighting on. Ukraine cannot prevent Russia from targeting their energy infrastructure or apartment buildings, yet here they are, still fighting on.

If we're talking about strategic/civil air defense, then you must figure out what's tolerable to your population (and how to increase and maintain that tolerance), and then figure out all the means to reduce the incoming attacks to below that tolerance. That must include the full spectrum of offensive, counter offensive, defensive, and informational options.

energy123 10 hours ago|||
In the Ukraine-Russia war, air defense is used to deny air superiority to the enemy. Just a few days ago, Ukraine blew up Russia's helicopters in the air with drones. It's not the successful hits that matter, it's the capabilities that you deny by posing that credible threat.
bojan 3 hours ago|||
The difference being, Ukraine has no choice but to fight on.
breppp 8 hours ago||||
> interception rate yet it's really at the mercy of Iran to not target their most vulnerable sites

And what this site and you don't account for, is Iranian rather low missile accuracy.

If Israel was at the mercy of Iranian attacks, Iran could have simply struck Israeli airbases to the point they cannot be used, and then stop any Israeli attacks on its territory.

It's pretty obvious they don't have the capabilities of doing that

cheney_2004 8 hours ago|||
Iran has successfully targeted countless bases around the Middle East, a lot of this news simply isn’t being covered. Most of these strikes are on static assets like radar, depots, and other structures. If you are thinking about the F35s, strikes that hit runways are repaired in a matter of hours. As for the F35s themselves, they are constantly on the move or simply kept in the air. Service and storage is done on remote bases outside of the target zone. This has been standard practice since military aircraft has been introduced.
breppp 8 hours ago||
That's certainly what Iranian propaganda is saying, as if everybody is censoring their great successes. Fact is there is no meaningful reduction in Israeli attacks, while Iranian launching ability had greatly suffered. So these air bases are probably not being hit. Apart from it in the era of OSINT satellite imagery, it is no issue to publicize such damage, I don't know of any such imagery

Regarding the gulf, there the Iranians are having better success as at those ranges intercepting drones is harder and due to the general military ineffectiveness of the gulf nations

anonymous_user9 5 hours ago|||
> Apart from it in the era of OSINT satellite imagery, it is no issue to publicize such damage, I don't know of any such imagery

Not sure about other providers, but Planet Labs has applied a 14-day delay to satellite images of the middle east.

https://www.reuters.com/business/aerospace-defense/satellite...

tmnvix 4 hours ago|||
I haven't seen imagery of damage to Israeli airbases, but plenty of imagery showing damage to US military bases. e.g. https://www.youtube.com/watch?v=o0cIOMVBSbU . Worth keeping in mind that in the case of Israel, censorship is very effective.

From the Iranian perspective, the overall strategy seems to have been:

1. Deplete intercepter stock and probe US/Israeli defences using large amounts of older less accurate missile stock and waves of drones.

2. Target radar and early warning systems.

3. After 'blinding', make further use of more vulnerable but cheaper and more accurate drones to target specific infrastructure.

Given this approach it makes total sense to see their 'rate of fire' reduced by 90%. This is not necessarily an indication of reduced ability to launch attacks - their attacks are now more effective. They have demonstrated that each time the US and Israel escalate they successfully respond almost immediately. Talk of their capabilities being wiped out is demonstrably nonsense.

Ted Postol makes much the same points. He also claims to be surprised by the accuracy of recent missiles launched by Iran and assumes that his earlier analysis underestimated this because it was done based on the older stock Iran was using.

It seems pretty clear to me that Israel and the US are on the back foot here. Defences are inadequate. Economic pressure is building. Iran still has plenty of options to increase pressure (e.g. Houthi involvement, further infrastructure targeting, additional constrictions on the strait of Hormuz). By comparison US ability to increase pressure now seems limited to threatening major war crimes (wiping out Iran's power grid and putting the country into blackout). Not to say many of Iran's actions haven't also been war crimes.

How much more damage can Iran accept? Nobody is about to be voted out of power there so I would think quite a bit (as unpleasant as that is for the millions of innocent people caught up in this madness). I think the truth of all of this is that the US and Israel have no way to wipe out Iran's missile and drone capabilities. Postol even suggests nukes wouldn't even accomplish that. So now what? Taco or push further for Iranian political unrest or division.

My feeling is that this is going to get a lot worse for everyone involved.

andrewflnr 1 hour ago||
If Iran was having great success with their attacks, they wouldn't therefore tail off the intensity if they could help it. They would just start scoring more hits with the same, presumably maximum, rate of fire.

I think the obvious answer is the correct one here, that Iran's launch capacity has been degraded. That's not to say it will ever go to zero, so a lot of your other points still have some merit.

dlisboa 8 hours ago||||
You're making the same argument I am. If Iran had a small increase in accuracy they could hit targets that'd disable a lot of Israel military and civilian infrastructure. A lot of stuff is getting through. To counter that Israel has to achieve a perfect interception record. The balance is throughly on the side of offensive drone/missile warfare.
breppp 8 hours ago||
I don't think we are arguing the same thing. I am arguing that even without any air defense, Iran would have difficulty hitting its targets in Israel with ballistic missiles due to low accuracy. When adding interception rates they have a real problem in attacking strategic facilities, air bases is a good example, which would be much more important than desalination plants.

You can then see that they shifted to completely attacking large cities, usually with cluster bomblets. The reason is when you are bombing a large area, aim is less of an issue, similar to WW2 carpet bombing

Your post alludes to drones, these do not reach Israel (from Iran) at all and are all intercepted

YeGoblynQueenne 2 hours ago||
Shahed drones have a maximum range of 25000 km [bbc_1]. The distance from e.g. Isfahan to Tel-Aviv is ~1592 km [google]. Shaheds can reach Israrel from Iran.

As to them all being intercepted, in the 12-day war that seemed to be the plan, i.e. force Israel to waste interceptors on cheap drones [bbc_2]. That seems to have changed in the current conflict.

_______________

[bbc_1] With a maximum range of 2,500km it could fly from Tehran to Athens.

[bbc_2] When Iran attacked Israel with hundreds of drones in 2024, the UK was reported to have used RAF fighter jets to shoot some down with missiles that are estimated to cost around £200,000 each.

Both exceprts from:

https://www.bbc.co.uk/news/resources/idt-b3a272f0-3e10-4f95-...

[google] https://www.google.co.uk/maps/dir/Isfahan,+Isfahan+Province,...

gnabgib 2 hours ago||
You need an edit on your first range (typo). 25Mm is amazing, nowhere is too far away (except the moon).
energy123 11 hours ago||||
Practise is good, but exhaustion is bad. Russia is getting exhausted, which is why their influence collapsed in Syria, Azerbaijan and Armenia, allowing the US to overtake those vacuums.

The US in WW2 staged their 20th century by letting others (China, South East Asia and the British/Soviets) get exhausted first. This was more an accident of geography rather than US grand strategy, but it worked all the same.

ceejayoz 11 hours ago||
Except this looks likely to exhaust the US/Israel alliance, if it continues long, leaving China in the "US in/after WWII" spot in the analogy.
elfly 9 hours ago||
USA won't injure or kill 1 in 25 of young adults in the Iran war, unless somehow Iran does have a nuke and wants to use it, come on.
ceejayoz 9 hours ago|||
Raw manpower is hardly the only aspect of war.

Especially in modern war.

Running out of fancy equipment, for example, causes quite a few problems if your opponent hasn't. Like interceptor missiles.

jopsen 4 hours ago||
Currently conflict is a really good sales pitch for buying more interceptors.

You could expect order books to get so thick that production increases.

I mean looking from the side lines, I could see why many countries might want to have a few interceptors on hand. Just in case, it's certainly a nice way to buy some time.

pjc50 9 hours ago|||
Quite possibly would end up killing or injuring that many Iranians, though.

Gaza is up to 10% of the population killed or injured in the Oct 7 reprisals: https://costsofwar.watson.brown.edu/paper/HumanTollGaza

don_esteban 4 hours ago||||
The defense against Bayraktar at the beginning (the big column to the north of Kiev) was dismal because AA assets were turned off, not because they were unable to shoot Bayraktars.

The problem was command and coordination.

Darwin worked and Russians learned (as did Ukrainians).

Regarding your last point: In peace time, you want to prioritize hiding your true capabilities (perhaps inflating them in (misleading direction) to deter them from attacking). Once the ware breaks out, you want to improve your capabilities as fast as possible.

fpoling 1 hour ago||
With Bayraktar it was a software update for radar that allowed for Russian to destroy them. The radar signature of Bayraktar was way off from a typical target that radars were looking for at the beginning of the war.
jsw97 5 hours ago||||
Definitely, you have to weigh the benefit of experience against the cost of revelation. (And all the other costs of course.)
neutronicus 11 hours ago||||
"Data moats" are a problem for military tech, too, I guess.
btown 11 hours ago||
One very interesting instance of the "military data moat" is Ukraine's annotated database of drone footage, perhaps the first of its scale from live engagements [0]:

> They can now draw on an enormous pool of real warfare information. Last year alone, Ukrainian drones recorded around 820,000 verified strikes against Russian targets... Meanwhile, the country’s Avengers AI platform detects upwards of 12,000 enemy targets every week. Developers can now access these sources and the data that they gather to train their systems on the movements of a real Russian turtle tank or a camouflaged Lancet launcher.

> “Ukraine currently possesses a unique body of battlefield data unmatched anywhere in the world,” recently appointed Defence Minister Mykhailo Fedorov said in a statement. “This includes millions of annotated frames collected during tens of thousands of combat drone missions.”

With the latency and offline constraints of battlefield technology, smaller models, trained with better data, may prove to have a significant edge. But it's still early days on how data like this might prove advantageous in other environments.

[0] https://resiliencemedia.co/how-ukraine-is-transforming-its-b... (unconfirmed source, this is not an endorsement)

maxglute 10 hours ago||||
>much more value from validating and improving your equipment and its handling than the actual "cost" of revealing its capabilities to adversaries in almost every conflict.

The value of carrying a big stick is lost when others see the stick breaks after a few swings. There's value in maintaining military kayfabe - revealing hand in sideshows and losing deterrence for main events as result can be much costlier down the line. What was learned that wasn't already known and deliberately avoided in polite conversation?

roysting 11 hours ago||||
There is no amount of math that can make up for the lopsided dynamic of hypersonic missiles. The only reason the “iron/gold dome” con job was even plausible to plunder trillions in U.S. Monopoly money was because missiles were crude, slow, and not MIRVed or had decoys at one time. That was a long time ago though.

MIT Prof. Emeritus, Theodore Postol, has been trying to warn about this basic, mathematically proved fraud for many years now. However between the indifference because the party was still in high swing and the plundering was making people rich who could pay professional lobbyists/liars, very few people were paying attention or really cared, even though it’s clear fraud and just a false confidence; as is the objective of a con job, which comes from “confidence trick”.

There are several lectures he gives and more recent appearances on various YouTube channels where he clearly describes the inherent fraud in “missile defense”.

Here’s the synopsis; it’s like trying to prevent sand from hitting you once someone has thrown a fist full of dry sand at you.

It’s basically just the end game in a long history of American snake oil salesmen turned missile defense salesmen. You get useless junk, they run off with your wealth.

twoodfin 2 hours ago|||
MIT Prof. Emeritus, Theodore Postol, has been trying to warn about this basic, mathematically proved fraud for many years now.

Indeed, there are any number of very smart people who made up their mind 40 years ago in opposition to Reagan and SDI.

Surprisingly, very few of these folks have evolved their position over decades of changes in the strategic and technology pictures:

Defensive systems can’t work and are inherently destabilizing even though everyone knows they can’t work.

(I’m modestly agreed on the second point!)

srean 10 hours ago|||
I agree that a barrage of maneuvering missiles can be neigh impossible to defend against.

Regarding these cluster munitions though, other than very densely populated areas, do they inflict much damage ? Are they more powerful than a grenade, say ?

It's going to devastating to soft tissue surely, and pierce through ordinary sheet metal, but normal concrete walls might offer sufficient protection. Unless, of course, it punches through the ceiling by virtue of sheer kinetic energy.

BTW I have no expertise in these matters, so corrections would be very welcome. I also recognize that I am commenting about something from the comfort and of being out of range and this discussion can be very distressing.

m000 3 hours ago|||
> Regarding these cluster munitions though, other than very densely populated areas, do they inflict much damage ? Are they more powerful than a grenade, say ?

Also not an expert, but I get the feeling that "cluster munitions" is pretty much an umbrella term.

Because of the CCM [1], we tend to associate the term with the "ligther" variants, which are used as anti-personnel weapons. These variants probably wouldn't be much more destructive than a few grenades.

But what Iran is currently using, appears to be missiles with 500-1000kg payload. This puts each submunition in the 50-100kg range. This should deliver a lot more of a punch than a grenade. Also, because of their weight, they probably wouldn't be covered by CCM, had Iran ratified it.

And, yes, it is unsettling geeking out on this stuff, that may actually be killing people as we write our comment.

[1] https://en.wikipedia.org/wiki/Convention_on_Cluster_Munition...

elzbardico 1 hour ago||||
Technically those are ballistic missiles with Multiple Independent Re-Entry vehicles not cluster munitions.
reillyse 9 hours ago|||
Instead of a cluster of grenades think many drones, the numbers start looking pretty bad when you have 100s of drones rather than a couple of missiles.
thaumasiotes 3 hours ago|||
> I'd expect much more value from validating and improving your equipment and its handling than the actual "cost" of revealing its capabilities to adversaries in almost every conflict.

That depends on how far out of touch your reputation was with the facts. If you're not able to live up to your preexisting reputation, being tested is all downside even if it improves your actual capabilities.

EthanHeilman 10 hours ago|||
It doesn't have to be, defender reveals everything and attacker chooses best strategy.

1. The defender could use both electronic and physical decoys, use air and sea mobile platforms that are always in motion and are difficult to track.

2. The defender can fire at decoys, to convince the attacker the decoys work when they don't.

3. The defender could mix in cheap decoy interceptor missiles that miss so the attacker concludes defenders need 10 missiles to intercept when the real number if 3 and the attacker thinks the defenders are running low on interceptors, when in fact the defenders have held most of their interceptors in reserve.

4. Defender can pretend that expensive systems have been destroyed so that attacker adapts their strategy. For instance, if your defense hinges on a small number of extremely expensive fixed X-band radars and the attacker targets them. Allow some of them to be appear to be destroyed when in fact, you have disassembled them and moved them somewhere else to use later in the war.

I see no evidence anyone is doing any of this today, I'm not making any sort of claims about deception operations in the current conflict.

dotancohen 15 minutes ago||
Many historical wars have been won by deception.

Sun Tzu taught us: When you are weak, appear strong. When you are strong, appear weak.

simonsarris 10 hours ago|||
On the other hand, the best way to improve your capabilities is to use them frequently.

The Russian army assumed a state of readiness for the Ukraine invasion that turned out to be, well, less. Their special forces floundered, their logistics were (are still!?) unpalletized - using bespoke metal containers and wooden crates! Whereas the US military learned an awful lot from its (mis)adventures over the last decades.

elzbardico 1 hour ago||
I think Russia's strategy fault was more that they didn't expect the amount of support Ukraine could coalesce in such a short time.
SegfaultSeagull 12 hours ago|||
Or perhaps they will learn they are outmatched, lack the resources and technological capabilities to compete, and deterrence will have been established.
dlisboa 11 hours ago|||
Very few countries lack the technological capabilities to produce these kinds of drones.

What most countries don't have is, for lack of a better term, the resolve Iran has shown. Venezuela could have built drones and resisted just the same, but it's internally divided enough that it was possible to strike a deal with an inside faction and have a coup from within.

elzbardico 1 hour ago||||
Iran can establish deterrence with asymetric means and let's not forget, that contrary to what most americans think, Iran is not a backward hell hole like Somalia or Afeganistan. For a third world country we could say they have a competent R&D infrastructure, with a good number of STEM graduates every year (with roughly half of them being woman, which shows they are casting a wide net for talents).

They also have a lot of leverage points in their geography, in the fact that the US is at a historical low point in its military capabilities.

US and Israel strategy seems to be to completely destruct Iran's economy, but the problem is that this is a game where they can also shoot back.

don_esteban 4 hours ago||||
There is a huge difference between 'deterrence' in the sense of deterring a country from taking aggressive action it might have otherwise considered, and 'deterrence' in the sense you are using here (surrender without fight, we are so much stronger than you).
pjc50 11 hours ago||||
Iran has always known that the US is a higher tech nation, but you should not just expect them to surrender on that basis.
deburo 11 hours ago||
That's not what deterrence means. From google: the action of discouraging an action or event through instilling doubt or fear of the consequences.

It's meant to avoid conflict altogether, say with China and Taiwan.

swat535 7 hours ago||
Iranian here, you're assuming sanity.

That doesn't work when your opponents pray for death and see martyrdom as victory.

This is genuinely how Shia extremists think. They have nothing to lose and will sacrifice everything and everyone for their cause. They don't care about Iran or Iranians or prosperity of the nation.

elzbardico 1 hour ago||
Every country that has a opposition diaspora says the same stuff you're saying here. For what is worth, you could be from a family of Savak secret police members.

And frankly that's not how it looks to me.

rendang 1 hour ago||
Every country's diaspora claims their country is ruled by Shia Muslims?
biker142541 12 hours ago||||
History would suggest otherwise; rarely is this ever the case.
quietbritishjim 11 hours ago|||
History doesn't necessarily make it clear when a war might have started but didn't because of some specific factor. Mainly you see the wars that did happen. (It has a strong survivorship bias in the sense that a war "survived" history if it went ahead for real rather than being considered and decided against.)
marcosdumay 11 hours ago|||
You seem to be implying that there is a long history of countries starting wars against the USA?
gzread 11 hours ago||
More like the USA starting wars against countries, and those countries not immediately surrendering, to which the USA is shocked.
falcor84 11 hours ago||
I think that there's a more general issue here with the US and the West in general having a mindset built up on playing Risk and Civ, which considers the foreign country as a whole as their opponent, whereas in practice, the adversaries are a multitude of individuals, for almost none of whom a surrender is the rational choice, especially (as sibling comments pointed out) when part of their reasoning and authority is based on a divine mandate.
testaccount28 11 hours ago|||
to be clear: your claim is that the us military is misinformed because key constituents have played too many board games?

does hearing it back like that make it seem absurd to you as well?

falcor84 10 hours ago||
Well, yes (except that Civ isn't a board game). And no, it doesn't make it seem absurd to me.

My argument is that Western strategic thought (with games being a codification thereof, rather than the source of) generally considers countries as mostly atomic actors that can be defeated - the history of European warfare being filled with "gentlemanly" surrenders followed up by peace treaties, with guerrilla warfare being a very rare exception.

On the other side, the reality in the East is that a state's collapse doesn't end the conflict, but just prolongs it. The army doesn't surrender, it goes home with its weapons and reconstitutes as insurgents. I can't actually think of a single proper surrender of an Eastern country ever, except for Japan in 1945.

dragonwriter 9 hours ago|||
> Well, yes (except that Civ isn't a board game).

It is actually several physical board games, the oldest of which is older than (and unrelated to) the computer game [0], as well as being a series of computer games that are basically digital board games.

[0] Well, except for the computer game based on it and its expansion, which, because of the other computer game, had the long-winded title "Avalon Hill's Advanced Civilization".

pyuser583 4 hours ago|||
Finland comes to mind.
falcor84 59 minutes ago||
As an example of an Eastern country? Well touché, I suppose you're historically correct, but what I had in my mind for this distinction is not the line in the middle of Europe (between the First World and Second World), but that between Europe and Asia. Sorry if I miscommunicated.
marcosdumay 8 hours ago|||
> when part of their reasoning and authority is based on a divine mandate

If you are atheist is becomes rational to surrender to the people that are invading your house and killing your friends at random?

nerfbatplz 11 hours ago||||
The Iranians just hit an F35 with a proverbial box of scraps they put together in a cave. The Chinese military must have experienced collective euphoria when they saw that.
9cb14c1ec0 11 hours ago||
To be clear, that F35 was being incredibly careless, flying low in broad daylight. All the stealth features of an aircraft are useless if you can look at it with your own eyes. In any conflict with China, F35s would not be flown that way.
pjc50 9 hours ago|||
In a direct conflict with China, the ICBM exchange would destroy the F35s on the ground.
elzbardico 1 hour ago|||
There won't be a direct conflict with China, at least not in the last 10 years, because the US first needs to complete de-coupling his economy from China more, re-industralize in-shore or at least near-shore, and dramatically build up its military and logistic capabilities to fight an expeditionary campaign on China shores.

China also is not stupid, and no matter how much they posture, they won't invade Taiwan.

mrguyorama 9 hours ago|||
China doesn't seem to think so. China believes they need to fight those F35s in the air.

Why would the opening salvo be ICBMs?

don_esteban 5 hours ago||
To deny the US the use of any nearby airfields (Okinawa, several others in Japan an Philippines). This will limit US airpower to carriers, which are few and sinkable.

Of course, China wants to be able to fight those F35s in the air - to mitigate the damage they can do to them (while the F35s still have airfield/carriers to land on) - also in order to make it easier to sink those carriers.

Still, you can bet that all US nearby airfields would be peppered very early in the conflict.

iso1631 10 hours ago||||
You're holding it wrong?

How many cheap-ass drones could you buy for the cost of one F35. 100k? A million?

breppp 8 hours ago||
None of these reached Israel from Iran this war, so maybe their superior quantity is not enough
don_esteban 5 hours ago||
Iran does not have a million of them, the numbers they have are better utilized on targets in Gulf states.

If Iran launched 10000 Shaheds towards Isreal, you can be sure quite a few would get by.

Maybe Ukrainian drone interceptors can be made cheap enough to be good enough against massed Shaheds.

We are still early in the new paradigm, there will be significant developments.

fpoling 1 hour ago||
APKWS interceptor is about 35K USD and works much better than drone-based interceptors. The problem is to scale the production, training and deployment. Another problem is detection. One needs wast multilayered system that US military missed to build as big stationary radars are very hard to defend.
nerfbatplz 10 hours ago|||
To be clear, Trump announced that the US had destroyed Iran's air defenses, missiles and missile launch capabilities. Trump also said that the US enjoyed air supremacy over Iran and were flying when and where they wished.

Maybe one of these days we'll see a B-52 take off with JDAMs and not JASSMs but probably not, kind of scary to try and drop gravity bombs on a country that your stealth fighters can't fly over.

https://www.youtube.com/watch?v=tohttYlvFvU

breppp 8 hours ago||
B-52s takeoff with stand-in weapons when attacking Iran, as their air defense is largely destroyed

https://theaviationist.com/2026/03/23/b-52s-launching-from-r...

varispeed 11 hours ago|||
You miss the fact that many adversaries will not act rationally.
iso1631 10 hours ago|||
Yes, if it was acting rationally the US Would not have spent billions trying to blow up an 80 year old man while massively increasing the price of oil and fertiliser globally leading to economic instability

But the US has not acted rationally. It hasn't since January 2021.

varispeed 10 hours ago||
There could be a rational explanation if you assume US administration is compromised by Russia and Ayatollah's son wanted him out to assume power. One phone call to Putin, Putin's one phone call to Krasnov and everyone is happy. Son gets the power, Russia gets sanctions lifted, higher oil price, US and allies spend kit that cannot be now sold to Ukraine, Krasnov gets to play the stock market. Win-win-win.
tosapple 2 hours ago||
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baxtr 11 hours ago|||
Especially when they're optimizing for afterlife.
elzbardico 1 hour ago|||
A big part of the US involvment in the current war is driven by Christian Zionists, that literally believe that there needs to be a fucking end-of-the-times war in the region so Christ comes back.
breppp 8 hours ago||||
The fact that many Iranian officials optimize stealing millions from the state, means they aren't optimizing for the afterlife
keybored 8 hours ago|||
This thread is talking about how the adversaries will attack America based on the current events that Iran is counter-attacking Israel and American bases since Israel and America invaded them illegally.

Lots of smugness about the supposed irrationality of the adversaries considering that backdrop.

baxtr 11 hours ago|||
While this is true it's also impossible to avoid.

So you could also argue that this war will help the US to gain experience it didn't have before which might be favorable in future conflicts with parties that didn't have this experience.

testaccount28 12 hours ago|||
there is a benefit as well, though, as it makes your threats credible.
standardUser 5 hours ago|||
Take China for an example. No one knows China's true military capabilities, because they're rapidly evolving and because they virtually never use them. If there's an element of surprise to be had, they have it. But that cut's both ways, because China itself doesn't have experience exercising those capabilities. The learning curve could be noticeable. Meanwhile, no one doubts the ability of the US military to execute.
elzbardico 1 hour ago||
Basically the only country left in the world with expeditionary capabilities is the US.

It is hard to compare this with China. Different goals and philosophies.

DivingForGold 11 hours ago|||
Did I miss this ? Missing from the discussion is that Iran's cluster munitions in each single missle have absolutely overwhelmed Israels defense and would likely do the same to US military as well. Also to consider, Iran's $20,000 drones versus our $1 million dollar interceptors.
maratc 11 hours ago|||
Cluster munitions are great against infantry in open field; less so against population centres equipped with advance warning systems. As it stands, they fail to even cause the damage worth offsetting by firing interceptors. The damage these inflict on Israel is not unsustainable, and they don't do much to create deterrence.

Given a choice of conventional 500-800 kg warhead or cluster munitions warhead, I think that the nations in the current conflict would prefer being on the receiving end of cluster munitions (as a less bad option) every time.

don_esteban 5 hours ago|||
Depends, blanketing Ben Gurion (or any airbase) with parked aircraft on the tarmac with carpet munition is a really bad day.

But yes, against protected targets cluster munitions do not achieve much.

If you have relatively few low-precision missiles, using single warheads means you are risking achieving NO damage (easier to intercept, a good chance that it will hit nothing), with a cluster munition you are guaranteeing at least some damage.

I think Iranians are mixing both types of warheads.

varjag 4 hours ago||||
Russia regularly uses cluster warheads on their ballistic missiles to a devastating effect. It all depends on the type of the target.
mamonster 10 hours ago|||
>The damage these inflict on Israel is not unsustainable, and they don't do much to create deterrence.

Has there been a study on this? What is the GDP loss of having however many Israelis go to bunkers due to incoming ballistics instead of working ?

If a trash cluster missile that costs 100k USD to build causes 1mio USD worth of GDP to not be produced (numbers completely made up) then it's very worth it.

maratc 10 hours ago|||
No idea about studies or GDP; just observing that the losses inflicted by Iran on Israel in June 2025 did nothing to deter Israel from going on offence again eight months later.
mrguyorama 8 hours ago|||
Ballistic missiles do not cost only 100k USD to build. They are very unlikely to ever be that cheap. Rocketry requires enough precision to not explode on the launcher. Ballistic missiles with conventional munitions are only useful for point targets. Cluster munitions like Iran uses are an admission that they aren't targeting specific systems, aren't expecting to penetrate defenses, or other reasons why they would waste a ballistic missile on the modern equivalent of the Paris Gun.

Harassment weapons don't do much. None of the harassment campaigns done by the Nazis for example really amounted to anything.

Modern Shaheds can be possibly built at a scale to affect that, but we really haven't seen it happen yet. That would be something like thousands launched in a single wave against a single city or installation. But they still lack the precision and warhead to be targeted meaningfully.

You need WW2 industrial scale manufacturing lines worth of Shaheds to get beyond harassment. You need to be producing hundreds a day or more. That kind of industry is nearly impossible to protect from your adversary so unlikely to take shape.

wavefunction 11 hours ago|||
You could counter multipayload missiles by hitting the missile earlier in its trajectory before the payloads deploy, that was the plan for MIRV nukes but it requires usually forward interceptors or perhaps energy weapons we don't yet have.
don_esteban 5 hours ago|||
Hm, Iran destroyed several of the radars used for seeing their missiles in the early stages of their trajectory.
mrguyorama 8 hours ago|||
Hitting Ballistic missiles "Midcourse" as you suggest requires interceptors that look more like https://en.wikipedia.org/wiki/Ground-Based_Interceptor or https://en.wikipedia.org/wiki/Arrow_3

It is.... Entirely infeasible to deploy these against tactical ballistics like Iran is using.

grafmax 58 minutes ago|||
"Our" adversaries, huh? There are more people in our country than pedophile billionaires, but it's this group starting the wars, murdering civilians, and producing generations of "adversaries".
p00dles 11 hours ago|||
who is our/us?
renewiltord 11 hours ago|||
Veterancy is more valuable. Observers can tell only a certain amount about what you can do, but you know your limits much more deeply and you can adapt. In fact, it's much better we get our nose bloodied repeatedly now¹ so that we learn how fallible we are and make sure our processes involve aircraft carriers not being put out of commission during wars because of dryer lint fires.

¹ in a military sense; in a geopolitical sense obviously it's clear that Iran has been a misadventure

1234letshaveatw 12 hours ago|||
That seems like an acceptable trade off to get some real world experience with what works and what doesn't with regards to massed drones and swarming. There is a lot we can learn in this conflict with relatively low stakes
lejalv 11 hours ago||
Stakes for whom?

>100 kids got murdered the first day of this "low stakes" war

1234letshaveatw 10 hours ago|||
How many protesters were killed leading up to it?
keybored 10 hours ago|||
How does bombing a school help protesters?
1234letshaveatw 10 hours ago||||
The USA
teleforce 10 hours ago||||
Imagine the NATO reaction if on the very first day of Russo-Ukrainian war offensive is by Russia performing missiles bombing murdering 100 kids studying in Ukraine primary school.

Trump candid reaction to the Iranian school incident when asked by reporter was "I can live with that".

varjag 4 hours ago|||
We don't need to imagine. Hundreds of kids sheltered in Mariupol theater building were killed in one attack in the first weeks of the war.
pjc50 9 hours ago|||
There were significant civilian casualties right from the start of the war in Ukraine, and several massacred villages.

Russian air defense shot down a civilian airliner mostly full of Dutch nationals and the response was just condemnation and tweaking the sanctions a bit.

keybored 11 hours ago|||
“Iranian kids may die... but that’s a prize I’m willing to pay.”
1234letshaveatw 10 hours ago||
"I much prefer nuclear conflict"
keybored 10 hours ago||
Propose a nuclear free zone in the Middle East, propose a global nuclear free zone, propose to cooperate with other nuclear powers to disarm.

But that’s apparently not the real concern at all.

vasco 12 hours ago|||
If we really want to put a certain hat on we can also say those adversaries have an incentive to not prevent (or even incentivize) those wars for that same reason. Even if that's by helping along a guy that is easy to manipulate through a childlike ego become president.
jmyeet 11 hours ago|||
In strategic circles, this was a common thought in the 12 day war: Iran was essentially mapping and testing defenses.

As evidence of this, the US was forced to hastily move THAAD ground station radar from South Korea because Iran destroyed a bunch of them in the Gulf [1][2]. Bear in mind there aren't many of these and they cost half a billion dollars each.

Further evidence of this is how quickly it happened. Iran most likely had detailed contingencies and battle plans for this kind of event.

As an aside, this is what militaries do. They plan for things. So whenever you see some conspiracy about how government X reacted to situation Y quickly and thus had foreknowledge, you can ignore it. Military planners are paid to make up fictional situations and figure out how to respond. That's what they do.

Weapons are the ultimate export. You use them and blow them up and the customer has to come back and buy more.

[1]: https://www.theguardian.com/world/2026/mar/11/redeployment-u...

[2]: https://www.cnn.com/2026/03/05/middleeast/radar-bases-us-mis...

jandrewrogers 11 hours ago||
> Iran destroyed a bunch of them

If by "a bunch" you mean one.

hollyhotdog 11 hours ago||
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infinitewars 15 minutes ago||
It doesn't have to work, when the military industrial complex benefits either way.

The U.S. is on a path to spending trillions of dollars to putting missile defense (and offense) systems in space with the Golden Dome.

srean 12 hours ago||
Game theory would be useful for these kinds of modeling.

Perhaps the government should have and advisory body that employs the smartest mathematicians for running these scenarios. Of course a lot of randomness needs to be modeled too. Wonder what would be a good name for such a body :)

Paradoxically, if anyone leaks unpalatable information from the inside that would be a problem for the government.

https://en.wikipedia.org/wiki/Daniel_Ellsberg

https://en.wikipedia.org/wiki/Ellsberg_paradox

https://en.wikipedia.org/wiki/RAND_Corporation

owenmarshall 12 hours ago||
Two more sobering axes to introduce: cost and manufacturing capability.

Numbers are hard to find for obvious security reasons, but using the numbers most optimistic to the defender[0] suggests an adversary using a Fatah type hypersonic is spending 1/3rd the cost of an Arrow interceptor, and is launching missiles that are produced at a much faster rate. Interception is deeply asymmetric in favor of the attacker.

[0] https://www.jpost.com/israel-news/defense-news/article-82314...

jonaslanglotz 11 hours ago||
Calling a Fattah hypersonic is a misleading claim. It is simply a ballistic missile that reaches hypersonic speeds, which is different from a true hypersonic weapon in its flight path and ability to maneuver. This distinction is important because it makes it significantly easier to shoot down than something like a hypersonic glide vehicle or hypersonic cruise missile.

But I agree with your point that it does remain difficult to intercept and poses the shot-exchange problem.

nerfbatplz 11 hours ago|||
There's videos from Israel showing Iranian missiles performing AD evading maneuvers that western media was saying was impossible a few months ago.
Gravityloss 11 hours ago||||
Depends on the school. https://www.reddit.com/r/NonCredibleDefense/comments/1at8gj4...
shdudns 1 hour ago||||
But they can steer, videos show that.

This really shouldn't surprise anyone. Iran graduates as many engineers as the US (70% women), but few of them are working on front-end A/B optimization of some boutique dating site.

And, having taken grad classes with folks graduated from Iranian universities, their training is excellent. The Persian kids were always at the top of their class.

EDIT: for the record the class I merely audited was graduate level (rational) mechanics - the class par excellence if you're going to build a hypersonic.

Some observations:

Half the class was Chinese, the academically better half was Persian.

I was the only Westerner (albeit also foreigner)

The girls were wearing veils.

According to the professor, the best mecanist (?) of the 20th century, Clifford Truesdelle, was an American

The Professor was Iranian.

redtrees11 8 hours ago|||
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energy123 11 hours ago|||
The best missile defense is offsense: degrading the launchers, stockpiles and defense industrial base, with cheap stand-in munitions after SEAD, leveraging air and intelligence superiority. Expensive interceptors are only a stop-gap that buys you time for the offensive degradation. Expensive stand-off munitions, likewise, are a short-term stopgap until SEAD is complete.
hedora 10 hours ago|||
Offense doesn't work at scale.

As the cost of drones goes to zero, the expected damage you take is roughly proportional to how much you have to lose. This means larger / richer economies cannot win these sorts of wars. To see what I mean, check out this desalination plant map:

https://www.theguardian.com/world/2026/mar/23/iran-threat-to...

It doesn't help if your commander in chief is incompetent and your invasion strategy involves treating desalination plants as legitimate military targets.

Of course, blowing up desalination plants in the middle east don't hurt the US all that much, but blowing up industrial supply chains does. We're something like 4 days away from a global chip manufacturing industry shut down (barring some logistic miracle, since we recently sold off our strategic helium reserves).

energy123 10 hours ago||
It's heavily dependent on geography. Iran is geographically "lucky" it's positioned near the Strait of Hormuz and near the oil facilities of multiple Gulf states, allowing it to exert extreme asymmetric pressure through a small amount of drones etc. Most states can't replicate that luck. Good luck to South Africa if they ever decide to wage a similar war. Strategic depth also largely nullifies the role of one-way attack drones in combat, but it doesn't nullify the role of fighters and bombers who can exploit that range. I'm not discounting drones, they're highly important in many geographies, as Ukraine is showing, but I don't buy into this conventional wisdom online that they're the pinnacle in every situation.
dlisboa 10 hours ago|||
Israel is similiarly lucky that it is surrounded by neighbors with US bases that can intercept missiles and drones before they get to it. All of its more competent enemies are very far away. In a different scenario there'd be no motivation for a country like Iraq or Jordan to help.

They can afford to try to destroy Iran's offensive capabilities because in-between countries allow their airspace to be used.

Wars are usually between neighbors. If a neighbor has a huge stockpile of drones they can launch a first salvo that'll overwhelm whatever defensive capabilities the other country has before they even get to the point of destroying launchers/manufacturing.

Threats of massive drones strikes are the closest deterrent a country can get to nuclear weapons without developing nuclear weapons. If Iran had 5 million drones instead of 50 thousand this war wouldn't even be happening.

hedora 9 hours ago||||
Russia is already shipping containers full of Iranian drones to the Ukrainian front. It doesn't take much imagination to see how geographic location is going to matter less and less as technology improves.
iso1631 10 hours ago|||
It's America that's waging this war, having attacked Iran for no reason the world can see

It's somewhat similar to Russia waging a war in Ukraine, although I can see some reasons for Russia to attack Ukraine (mainly territory)

pc86 9 hours ago|||
If "I want this land" is a legitimate reason to initiate a war then basically anything is a legitimate reason.
elfly 9 hours ago|||
Ah yes, Russia, the famously territory starved country.
shdudns 1 hour ago|||
So what Iran did in the Gulf

Cheap drones overwhelming defenses until the billion dollar radars and airfields got hit.

Then methodically hit everything according to a plan that forces allied forces to retreat to reliable water sources.

Whatever one thinks of Iran, the way they're waging this war is a masterclass in strategy.

hedora 11 hours ago|||
Currently, we're using $1M interceptors to take out $30K drones. This asymmetry is here to stay.

The end game probably involves < $1000 autonomous drones that target IR or RF and drop something like hand grenades. On the defense side, there would similarly-priced interceptors with bolas, backed up with sharp-shooters for important targets.

At that point, it turns into a logistics problem that's much easier for the attacker than the defender. Iran's already demonstrated that one successful drone can do $100B-1T in damages, so a hit rate of 0.1% means a 1:100K cost:damage ratio.

owenmarshall 10 hours ago|||
This leans towards my belief that the US is fundamentally fighting last century's war against adversaries that have _massively_ evolved.

Look at the Ukranians: they are currently fielding an entire suite of counter-drone tech: fast pursuit systems to hit Russian drones on launch, cheap FPV drones for last-mile intercept, integrated radar/acoustic monitoring to target and respond to launches... and of course, the Russians are responding with IR floodlights and air to air launchers on their drones, or even just launching a bunch of cheap foam decoy Gerbera's in the middle of their Shahed's to soak up intercepts. Meanwhile, the front lines are basically static -- any infantry from either side that tries to go into the kill box gets picked off by loitering drones.

And the best the US can field today is "$1mm per Patriot" or "cover a tiny area with Land Phalanx (which also costs something like $4k/second burst)".

jandrewrogers 10 hours ago|||
This betrays your ignorance of drone defense tech.

The US had APKWS (anti-drone guided missiles) operational in the 2010s and these have been widely deployed. They are effective and cost less than a Shahed. These are just mods of an existing dirt-cheap rocket for which the US has an effectively unlimited supply. The Europeans have similar systems under development.

The US has deployed high-power anti-drone laser systems for a few years now with several operational kills. These are still new but are expected to replace CIWS. It can kill a drone for the cost of a Starbucks coffee and has a virtually unlimited magazine.

US pioneered military drones and defenses decades before the Ukraine/Russia war. There are many operational lessons to be learned from that war but both sides are using drone defense tech that is considerably less sophisticated than what the US has available.

owenmarshall 9 hours ago||
> The US had APKWS (anti-drone guided missiles) operational in the 2010s and these have been widely deployed

... on 4th/5th gen fighters that cost tens of thousands per flight hour[0] based on current evidence of deployment. We're still killing mosquitoes with hand grenades.

Iron Beam/the US systems are certainly interesting, but haven't been scaled up to meaningful deployments yet.

Meanwhile, those "considerably less sophisticated" systems were fielded in exercises by the Ukranians against NATO doctrine and won handily[1].

[0] https://www.defenseone.com/defense-systems/2026/03/fighter-j...

[1] https://www.wsj.com/opinion/nato-has-seen-the-future-and-is-...

darepublic 1 hour ago|||
Isn't Ukraine helping now with the anti missile/drone defense?
pc86 10 hours ago|||
What Iranian drone did a trillion dollars in damages?

I'm not saying the general thrust of your argument is wrong, quite the opposite. But that's a big number for one drone.

dlisboa 10 hours ago||
A trillion seems large but it's not that absurd. The drone that shut down 17% of Qatar's LNG capacity is said to have caused 20 billion USD worth of annual lost revenue. They said it'll take up to 5 years to rebuild so that could be 100 billion USD in lost revenue, plus whatever it costs to do the rebuild.

A trillion dollars worth of damage seems possible if spread over some years for some countries in the Gulf where shutting down a desalination plant would cause depopulation.

maratc 9 hours ago|||
> that could be 100 billion USD in lost revenue

that could be 100 billion USD in deferred revenue, if we assume that LNG is not going anywhere from wherever it's sitting underground, and will be simply extracted and sold later

> plus whatever it costs to do the rebuild

That is the real cost, which I would assume is nowhere near billions

dlisboa 9 hours ago||
> that could be 100 billion USD in deferred revenue, if we assume that LNG is not going anywhere from wherever it's sitting underground, and will be simply extracted and sold later

That's not how revenue works at all.

maratc 8 hours ago||
I don't think anyone should have any concern whatsoever regarding Qatar revenues vs. Qatar budgets, as they are nowhere near bankruptcy, with this setback or without. Their position by projected GDP per capita may decrease from 6th (currently) to maybe 10th place in the world, which is still better than about 180 other countries.
logicchains 7 hours ago|||
>The drone that shut down 17% of Qatar's LNG capacity is said to have caused 20 billion USD worth of annual lost revenue.

That was a missile not a drone.

maratc 12 hours ago|||
That's a false comparison. You want to compare between the actual options you have, which are either (a) firing an interceptor (or several); or (b) repairing the damage caused by a non-intercepted missile.
owenmarshall 11 hours ago|||
Your first option comes with the major caveat that each interceptor you fire comes from a limited stockpile whose replacement rate[0] today isn't sufficient for even going 1:1, let alone accepting that multiple interceptors are required.

I'd say the real options in the near term when faced with an inbound missile is a) deciding to deplete your stockpile of interceptors with an incredibly limited replenishment rate; or b) risking a hit to a lower-value target.

Could the US go to a war economy footing and scale production? _Maybe_? I'm not entirely convinced the US can stomach the costs.

[0]: again, numbers are hard to find, but https://www.lockheedmartin.com/en-us/news/features/2026/Lock... gives a flavor of just what defenders are up against.

maratc 10 hours ago||
In theory; in practice however, there's been rocket fire from Gaza towards Israel where the offence was literally a metallic tube with a bit of TNT at a cost of about $800 per rocket [0] while the defence was $100,000+ per interceptor [1]. This has been going on for years, and as far as I'm aware there was no depletion observed.

[0] https://en.wikipedia.org/wiki/Qassam_rocket [1] https://en.wikipedia.org/wiki/Iron_Dome

pc86 9 hours ago||
I don't know the economic numbers off the top of my head but I have to imagine it's hard to find Israelis who think they're spending too much money on rocket interceptors.
wat10000 11 hours ago|||
It’s far more complicated than that. The choice is often between firing an interceptor against this missile aimed at this target, or firing that interceptor against the next missile aimed at a target you can’t yet know. Because unless your production capacity far outstrips theirs, you’re going to run out first.
maratc 10 hours ago||
Not if you (a) destroy their production capacity while they don't destroy yours; (b) you destroy their stockpiles while they don't destroy yours; and (c) you've found a bottleneck on their side (launchers) and destroy it while they fail to inflict the same damage on you.
wat10000 10 hours ago||
That's true, but feels very much like "draw the rest of the owl." And even if you can do it, you'd have to do it against any country that starts to build this capacity that you think might somebody potentially use it against you, even if they aren't currently, unless you're confident that you can destroy their launchers and stockpiles so quickly that they can't be used in any significant number. (And if the USA couldn't manage to do that to Iran....)
pc86 9 hours ago||
Yes, it's complicated. There's almost 1,000 generals and officers spread across the US military. They (and the tens of thousands of people directly supporting them) spend a lot of time on these things.

Sometimes "draw the rest of the owl" makes sense when you've got 20,000 people actively drawing owls all day every day.

wat10000 7 hours ago||
I'm generally sympathetic to the argument that there are a lot of experts doing expert things who know better about these things than some idiot sitting at his computer i.e. me.

But in this particular case, we're in the middle of a war where the owl didn't get drawn and the enemy has successfully launched thousands of drones and missiles at our forces and our allies, causing enough damage to severely disrupt the world economy.

bluGill 12 hours ago|||
There are too many potential attackers though, and not everyone is sane. So you don't really get a choice about it. The cost of the interceptors needs to be considered in relation to the cost of what it protects. If the interceptor means an attacker doesn't kill my kids then it was worth the cost. If the interceptor keeps a multi-million dollar building around then interceptor at a million dollars is still cheap, even if the missile it takes out was only $100.

Yes you should use diplomacy to ensure war doesn't happen in the first place. However if it does: they will send cheap drones and missiles at you in large quantifies.

ceejayoz 11 hours ago|||
> If the interceptor keeps a multi-million dollar building around then interceptor at a million dollars is still cheap, even if the missile it takes out was only $100.

Not if it means you can't intercept the next one hitting much a more valuable/critical building.

bluGill 11 hours ago||
That is a trade off that hopefully you never need to consider, but it is a valid concern that does come up in the real world.
hedora 11 hours ago||
It's not a hypothetical:

Trump started blaming Biden for the US's interceptor shortage two days into the war. Third-party military analysts say there's a high probability Iran's drone stockpile will outlast the US's first-tier interceptor stockpile.

The first-order math checks out: At the beginning of the war, we (and allies) were using 800 x $1M patriot missiles per day. The global production capacity for patriots is 600 per year, so there's no way we've have been able to maintain that cadence now that we're in week 4 of the war (the patriot program has not existed for enough decades). Now we see things like successful strikes on Israel's nuclear complex.

If the math isn't good enough, note that Trump backed down over the weekend, after Iran reiterated that they'd target civilian infrastructure if the US did so first. If we still had adequate interceptor capabilities, calling his bluff would not have worked.

wat10000 11 hours ago|||
Unfortunately, necessity doesn’t imply possibility. It could simultaneously be true that you must build interceptors to protect yourself, and that you can’t build enough.

It only makes sense to consider the cost of what’s protected if it’s actually protected. If your million-dollar interceptor protects a multi-million-dollar building from a $100 missile, and then that building is hit by a second $100 missile, was it worth it?

That’s the math that has prevented missile defenses from being deployed on a large scale despite being technologically possible for well over half a century now, and despite the fact that a single interceptor might be saving an entire city from a nuclear warhead.

An interceptor costs at least as much as what it intercepts. Take into account miss rates and the cost of defense is a multiple of the cost of offense. Add in the fact that the attacker can concentrate an attack but the defender has to defend everywhere, and multiple warheads on a single missile, and the cost of defense multiplies further.

If defense costs 10x more than offense (a conservative estimate, I’d say) then that means you need to dedicate 10x of your economic capacity to it than your attacker does. If your attacker dedicates more than 10% of what you can put into defense, you lose. Defense can work, but it needs to be against a far weaker enemy. Thats why the most prominent example is Israel defending against neighboring non-state actors. Israel is wealthy enough, and the groups shooting at them are poor enough, that the math works out in the defender’s favor. Iran is a rather different story. And of course defending the US against the likes of Russia and China is a fever dream.

pc86 9 hours ago||
> If your million-dollar interceptor protects a multi-million-dollar building from a $100 missile, and then that building is hit by a second $100 missile, was it worth it?

I mean the assumption is that if the first missile hit the building, the second missile would have been fired at something else, right? Still seems worth it at face value especially if there's enough time between the two missiles that there aren't people in the building anymore.

wat10000 7 hours ago||
My assumption would be that the attacker builds missiles based on the defenses they want to defeat. If you have no defenses, maybe the defender builds 1,000 missiles. If you have 1,000 interceptors with 100% accuracy, then maybe the defender builds 2,000 missiles.

This is why the superpowers mostly scrapped their ICBM defenses in the 70s. The technology worked fine. It's totally doable with 1970s technology if you're willing to put nuclear warheads on the interceptors. But for every ICBM interceptor you built, the other side could build another ICBM for the same cost or less. And you need more than one interceptor per ICBM since they can fail and the each interceptor only covers a small area. Add in multiple warheads on a single missile and decoys and suddenly you might need 10x or more. So the USA gave up on the idea of covering the entire country with interceptors, deployed a few interceptors to protect some missile silos, then shut it down after less than a year. The USSR built out a system to protect Moscow and only Moscow, which is still operational today. However, the British were able to maintain the ability to defeat that system and destroy Moscow with a single submarine, all on their own, never mind what the USA would throw at it.

If you have a certain amount of stuff you can build and you're deciding what to do with that capacity, it's not at all clear that missile interceptors are a good use of that capacity even if you're protecting objects that cost orders of magnitude more than the interceptors cost. It works if you're defending against a far less capable adversary (Israel's Iron Dome against Hamas, USA's GBI system against North Korea) but not with an enemy that's even vaguely close to being a peer.

bluGill 1 hour ago|||
That worked in 1970 because there were exactly two players who had incentive to not spend all the money so they agreed to reduce the total ICBMs instead. In the current world there are too many actors - it won't work, they can make thousands of missles. Ukraine has already proven you don't get to control when you are attacked. Thus the only option today is cost reduce defense and produce enough to intercept several thousand per day.
david_pearce 55 minutes ago|||
>However, the British were able to maintain the ability to defeat that system and destroy Moscow with a single submarine, all on their own

What are you referring to here?

jvanderbot 12 hours ago|||
Ah yes, but then you also have to add GDP + targetting/defense radii.

Great Britian alone has 10x the GDP of Iran. So an interceptor costing 10:1 is (at first approx) breakeven just for GB, who would have to intercept much less than the total manufacturing capability of Iran anyway.

Then you have every rich nation surrounding Iran as well. Let alone the USA who cannot be reached but throws their weight behind interceptions.

And finally "total manufacturing capability" is set to decline in any prolonged engagement with an Iran-like nation, but GB, western EU, USA, et al, are likely to only increase production if an engagement played out.

The math looks catastrophic on paper at 10:1, but I sincerely doubt that's the right analysis. An interceptor is worth what you're protecting, not what the attacking asset costs, so long as you can keep producing them.

orwin 11 hours ago|||
> total manufacturing capability" is set to decline in any prolonged engagement with an Iran-like nation

That was what Russia thought about Ukraine. Effectively, they needed East European tanks and munitions for the first two years, but munitions production ramped up, and now they produce more per year that what they received over two years. A resource-rich country like the Iran that is effectively fight a death war (that's the controlling party belief) can keep up a very long time. The fact that the US tried to get the Kurds and the Baloch/Sistanni involved show that they are well aware that the way out is through a permanent civil war and the country fracturation. And imho, while Kurds accepting to be betrayed by the US for the third time in less than two decade won't have any real long term impact, an independent Baluchistan can easily destabilise Pakistan. Also, that would be a third country in the area in which the Hanafi jurisprudence is pushing hard towards Deobandi/Salafi, and personally I'd rather have any Shi'a school than that.

DoctorOetker 10 hours ago||
> And imho, while Kurds accepting to be betrayed by the US for the third time in less than two decade won't have any real long term impact, an independent Baluchistan can easily destabilise Pakistan.

Not to confuse my prediction from prescription, but what prevents all the neighboring (direct or indirect over a sea) nation states from deciding to divide Iran like Germany was during the cold war? Thats not an independent Balochistan, at some point they will want reparations for all the damage, terrorism and intimidation they have incurred from Iran...

At some point the people in Iran will have to be forced to teach their innocent children the equivalent of the Nuremberg trials: there is no excuse in order to stop thinking, just following orders is not a valid legal defense.

Every population has the moral responsibility to keep the local aspiring autocrats in check, because if they don't and external power deconstructs the regime, the onus will be on the population!

orwin 7 hours ago|||
Saddam was paid (in chemical weapons, but not only) by the US to invade Iran, it didn't work well for them at the time, despite the MEK helping them with hidden routes and a lot of local support they don't have anymore. The current Iraki leadership isn't stable enough to do the same anyway.

Afghanistan and Pakistan are in a small war that will have some impact on Baluchistan, but official Pakistani ground troops are a no-no, because it will leave ground for the Taliban. Also India invested a lot in Baluchistan biggest port, and Pakistan threatening their investments will probably have them react (India love nothing more than helping Pakistan adversaries). Koweït is too small, Irak Kurds need to secure their autonomous region, and US promised are worth basically nothing. Azerbaijan used Iranian drones and artillery against Armenia like 2 years ago (maybe 3), and Iran apologised publicly after sending a missile to them.

All of this to say: only the US have the manpower and will for a ground invasion.

maxglute 7 hours ago|||
Probably scale, a few million jews, arabs - qataris and emirates and saudi royalty is unlikely enough to deconstruct Iran, unlike Germany vs multiple comparably or larger sized regional peers.

Iran is 100m large country + 100s millions more shia core / axis of resistance supressed by small regional satraps empowered by outside forces. There are simply 10x more Muslims in region suppressed for decades under same framework where arc of history would would look kindly on Iran+co for destroying US influence and the greater Israeli project and look poorly upon satraps and compradors for failing their spiritual and moral duty of reclaiming the levant. The Nuremburg trials will be reserved for those who failed Islam for secular glitz and kindly on those who protected the faith. Iran simply has the size and spiritual/historic/civilization mandate to win the regional narrative and "moral" war versus gulf monarchs that choose to coexist with Israel. Gulf monarchs who are btw also definitionally autocrats whose contract to bribe populous with petro state proceeds goes away if this war drags on, of all autocrats they are the most likely to fall and least likely to normalize against autocrat regime change. This not to say Iran is "correct/moral" just they have scale and discourse legitimacy Germany didn't.

Thaxll 11 hours ago|||
This is wrong, for example Iran have thousands of Shahed drones, they cost almost nothing to build, to intercept just one the ratio is way way higher that 1:10. A single patriot missile is in the multi millions $ range.
jandrewrogers 10 hours ago|||
They aren't using Patriots on Shahed drones. There are much cheaper purpose-built systems for that. While not practical everywhere, helicopter gun systems have proven effective in both the Middle East and Ukraine.

APKWS is quite popular and those cost less than the drones. A single fighter jet can carry 40. The Europeans are developing equivalent systems.

While not widely deployed yet, the US has operational laser-based anti-drone systems that have been shooting down Shahed class drone for a couple years now.

Ballistic missiles are more costly to deal with but ballistic missiles also cost much more.

jvanderbot 11 hours ago|||
No, what I said is not wrong just because there exists other things to intercept, that just changes the ratio.

You still have to consider whether it's worth it to spend a patriot missile to intercept a drone, vs letting the drone hit, say, a billion dollar radar installation or a dozen troops.

On the manufacturing side, nobody said that all drones are intercepted with patriots. You have to look at the avg cost to intercept vs the average cost to attack, and if the ratio of those avg costs (across all attack/interceptions) is, say 100:1, and the combined GDP of the defending nations vs Iran is 1000:1, then what is the problem?

There are lower cost ways to intercept already on the market and being rolled out. See for example: https://www.defensenews.com/global/europe/2025/09/11/uk-to-p...

This whole "cost analysis of patriot vs drone" examines the worst case scenario at a fixed point in time and ignores layered defenses, the effect of combined GDP, learning, diminishing capabilities of attackers, and improvements by defenders.

lejalv 11 hours ago|||
But your analysis should also include what fraction of GDP diverted to arms (or what increase in gas price) is acceptable on either side.
wat10000 11 hours ago|||
For one thing, the entire world economy is not even close to 1000x Iran’s.
hedora 11 hours ago||
$1M / $30 (patriot cost / drone cost) is only 33x. The US economy is about 31x larger than Iran's. So, to first order approximation, we could build enough patriots to sustainably stop their drones.

However, we haven't converted our economy to just producing Patriots. We can only produce 600 / year. Drone production rates are orders of magnitude higher than that.

As for second order effects, the interception probabilities are less than one, so in this world where we're producing a million patriots per year, tens of thousands of drones (at minimum) are hitting their targets. On top of that, the offensive drones are more easily transported + retargeted, so the patriots would need to be stationed pretty much everywhere, and their adversary chooses where the attacks actually happen.

The only winning move is not to play.

keybored 11 hours ago||
Sobering how asymmetric Iran’s attacks on Israel are after Israel attacked Iran.
delichon 12 hours ago||
Add multiple decoys and the missile math tends to become an argument for the importance of preemption. Han shot first for a good reason.
marginalia_nu 11 hours ago||
The game theory of it is the prisoner's dilemma.

Preemtive betrayal is a terrible strategy if there are more than two parties in the game, and they are allowed to cooperate.

You have to be one heck of a smooth conversationalist to convince them to take a number and patiently wait in line to be the ones to be attacked next.

If you're the guy that the others in the room know shoots first, you're also the guy the others in the room will shoot when he's reaching for something in his jacket pocket.

delichon 7 hours ago||
The prisoner's dilemma leads to mutual defection as the dominant equilibrium strategy in the one-shot version. Cooperation emerges as the equilibrium on repetition. The Han Solo gunfight is literally the one-shot version. When countries go to war that calculation is more complicated.
jandrewrogers 10 hours ago|||
Decoys are greatly over-rated in ballistic missile systems. Sensors are so good at discriminating decoys from warheads that decoys are largely ineffective and have been for decades. This has borne out in Ukraine.

A decoy sufficiently sophisticated to look real to good sensors will have weight and characteristics that approach that of a real warhead, at which point you might as well add another warhead. Decoys only make sense if the marginal cost of adding them is low.

jmyeet 11 hours ago|||
If you haven't, I'm going to recommend you to listen to an episode of Dan Carlin's Hardcore History, specifically The Destroyer of Worlds [1].

Why? Because it goes into the change in strategic thinking brought on by the atomic age (and, soon thereafter, the thermonuclear age). And there was an element of US strategic thinking that argued for a preemptive strike against the USSR.

The episode also goes into the arguments for and against the development of the hydrogen bomb, a weapon that could never really be used and arguably not even necessary when we already had the atomic bomb.

The outcome of those debates shaped American foreign policy from 1945 to the present day.

[1]:https://www.dancarlin.com/hardcore-history-59-the-destroyer-...

delichon 7 hours ago||

  With the Russians it is not a question of whether but of when. If you say why not bomb them tomorrow, I say why not today? If you say today at 5 o'clock, I say why not one o'clock?  -- John von Neumann, ~1950
On the one hand he was one of the smartest people in history. On the other, his home country had recently been conquered by the Red Army so he may have been a little biased.
busterarm 12 hours ago|||
Careful. Preemption takes many forms, some of them many would find unpalatable.
gos9 12 hours ago|||
Unpalatable preemption is generally better than reentry vehicles coming down your chimney.
phkahler 12 hours ago|||
The problem there is you can't prove anything would have come down the chimney if the preemption is successful, so people will still be unhappy.
busterarm 11 hours ago||
I agree, but some of them are more obvious.

Like not giving 100 billion dollars to someone who actively wants to kill you.

wat10000 11 hours ago|||
A thought experiment: would the world be a better place if the US had preemptively attacked the USSR in the 50s or early 60s when it was possible to do without more than “get[ting] our hair mussed” as General Turgidson put it?
XorNot 11 hours ago|||
But it's also the basic l basis of deterrence and the destabilizing nature of ICBM defense: relying on interceptors presumes the war happens.
heyitsmedotjayb 12 hours ago||
Preemption is a propaganda lie.
hedora 10 hours ago||
If you haven't, watch House of Dynamite.

Sadly, the Trump Administration concluded we should build exactly the defense capabilities described in the film.

They even cited it by name as a good roadmap for the Golden Dome, so I know they read the title. I guess their reading comprehension levels are extremely low.

solatic 5 hours ago||
The math and economics on missile defense are broken.

If your adversary uses nuclear-tipped missiles: within hours if not days, you are virtually guaranteed to suffer impact. Congratulations, New York is under a mushroom cloud. Lose.

If your adversary doesn't use nuclear-tipped missiles, you have a war of attrition whereby the cost of interceptors is greatly more expensive than the cost of building the conventional missiles. Congratulations, you wrecked your economy, if you can even keep up production of interceptors for long enough. Lose.

The only winning moves are to either use ground troops to invade and dismantle your opponents' missiles to prevent that risk from being realized, or to play mutually-assured destruction games trying to convince the other side that you're just an insult away from doing it anyway. And a Western world that seems desperate to keep boots off the ground is not playing that winning move.

aftbit 4 hours ago||
Shot exchange is a huge problem, made even worse by the arrival of cheap drones. But you're implicitly assuming that the adversary is on roughly equal economic footing. If your defense budget is $800 billion and your adversary's defense budget is $8 billion, you can afford to spend 100x as much shooting down their missiles as they spend lofting them.

There's also a danger in projecting linearly from the beginning of a war, where invading forces both tend to use more expensive stand-off munitions and also have to deal with more aggressive missile launches. As the defender's own air defense system gets degraded, the invader can switch from expensive long range stand-off munitions to cheaper stand-in munitions (like glide bombs) launched from much shorter range. Additionally, the invader will be able to diminish the defender's ability to launch missile strikes in the first place, either by destroying the launchers, the missiles themselves, or their production, thus reducing the demand on expensive high-capability interceptors.

Drones and mines continue to offer asymmetric warfare options that are very hard to counter without a robust low side on the high-low mix. Ukraine are the world's leading experts in this currently, and hopefully are involved with US and Gulf forces to try to improve this shot exchange ratio.

I am assuming nobody is using nukes though. That completely changes the picture. One must always assume "(some of) the missiles will get through". Traditional MAD does not require boots on the ground - merely the assurance that if Iran gets one nuke through and hits New York, the USA will respond with 100+ nukes. The real question then is what the other "large" nuclear powers (Russia and China, primarily) will do in response to that.

chasd00 4 hours ago|||
i don't think complete invulnerability was ever the goal of missile defense. It was meant to be a countermeasure to something where before there was none. I'm actually surprised it works as well as it does. Back when these things were first being developed and tested the thought was intercepting nuclear armed ICBMs, they were supposed to be massively destabilizing with respect to MAD and could conceivably give a nation first strike advantage. First strike advantage means just bare minimum survival not that you never get hit at all. Fortunately, that never really materialized.
mikkupikku 4 hours ago|||
The "if only one nuke gets through, you lose and the whole thing is pointless" is completely wrong. Even if surrender were mandatory after one nuke, all the other intercepted nukes would be thousands if not millions of lives saved.
Brybry 4 hours ago||
> the cost of interceptors is greatly more expensive than the cost of building the conventional missiles

And the same thing is true with this comparison. The cost comparison is not interceptor vs conventional missile.

It's interceptor vs conventional missile + the damage the missile would have done.

Yes, you don't want to use Patriots to intercept Shaheds but that's an argument for using the right tool for the job. It's not an argument that the economics of interception are completely broken.

Ukraine has interceptors that are cheaper than Shaheds.

PowerElectronix 4 hours ago|||
Ground troops that can't advance due to a cheap nonstop drone and missile barrage is also not a solution as you are going to run out of troops before ypur enemy runs out of drones.
kurthr 4 hours ago||
The losing move is using missile interceptors.

Whether it's high altitude drone swarms, terminally guided artillery munitions, hypersonic rail guns, or high energy laser defense, all are orders of magnitude cheaper than the interceptors and could be less than the cost of the (nuclear?) missile. It's true that generically defending against nukes is basically a fools errand, but if they're (also stupidly) limited to putting them on ICBMs with non-detonating fail safes, then it's probably economically doable and cheaper than the $10T forever war.

I'm sorry, the whole framing of this (OP) question/answer seems artificial and fundamentally silly.

deepsun 5 hours ago||
And that is the answer to Fermi paradox "why we don't see any other civilizations in the galaxy".
ozgung 10 hours ago||
As an alternative formulation of the same problem, maintaining peace has linear cost, completely solvable in linear time and rewards are unbounded for all parties.
heyitsmedotjayb 12 hours ago||
Would be interesting to know how the probabilities change once all your X band radars are destroyed. And then again how they change when all your L band radars are destroyed...
ErroneousBosh 12 hours ago|
> And then again how they change when all your L band radars are destroyed...

Connection reset by Yugoslavs with microwave ovens

vaporwario 11 hours ago|
Not sure if it applies exactly but this discussion brings to mind this saying...

"The loser of a knife fight dies in the street. The winner dies in the hospital."

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