Why are his brothers invading his country?

War is one of humanities oldest past times. If men can’t figure out their differences, they try to kill each other, as witnessed in the entire animal kingdom.

Unhappy that rapists and baby killers are stopped before they can commit more war crimes?

Well, Slovaks don’t believe they’re Russian.

Are you calling him a hypocrite for disagreeing with a politician from his country?

Almost all Europe supports Russia by buying oil and natural gas.

It's because killing unarmed soldiers during war is not a war crime.

Rule 3. All members of the armed forces of a party to the conflict are combatants, except medical and religious personnel.

https://ihl-databases.icrc.org/en/customary-ihl/v1/rule3

Rule 47. Attacking persons who are recognized as hors de combat is prohibited. A person hors de combat is: (a) anyone who is in the power of an adverse party; (b) anyone who is defenceless because of unconsciousness, shipwreck, wounds or sickness; or (c) anyone who clearly expresses an intention to surrender; provided he or she abstains from any hostile act and does not attempt to escape

https://ihl-databases.icrc.org/en/customary-ihl/v1/rule47

A surprise drone attack on any Russian combatant that isn't a medic or chaplain is "lawful", even if they aren't holding a weapon at the time.

So if artillery is fired at an enemy position, and they’re unarmed, is that a war crime?

Catching an enemy soldier unarmed doesn’t mean you’re a war criminal, it means they made a big mistake.

This is war, not a gentleman’s duel.

So if I see a drone I just drop my rifle and give it the middle finger and wait for it to go away and then resume when it's gone?

> I've seen some of these FPV videos of kills of unarmed Russian soldiers. I honestly don't know why the pilots are not prosecuted for war crimes.

An enemy combatant doesn't stop being an enemy combatant just because he dropped his weapons.

War crime is executing prisoners. And there are a few videos were Russians gleefully murder prisoners

Russia literally executes prisoners of war - those who have already surrendered. Russia castrates, tortures and cuts off heads of live prisoners of war. Russia targets and executes civilians.

Under what law?