Haha who are we joking with? One country is invading the other country for whatever reasons it has and rest of the world is playing diplomacy, War in itself in any shape or form is a crime but tell me the last time when the winner was prosecuted for war crimes?

All these war crimes shit is just a joke, It's all up to the countries, some countries do maintain some sort of delicacy to ensure a good rapport after the war, while some don't think of all these things in war, Civilian target has always been part of major wars, was US right when it bombed Hiroshima-Nagasaki? I don't see the then president being put to trial for committing a war crime? Why?
It's unfortunate, but you're probably right. But after this war, everything should be different. It is important to understand that if Ukraine is not helped today, then tomorrow Putin will make claims to other countries, he will never stop. That is why at this time most of the help for Ukraine comes from countries that directly border Russia, such as Poland, Latvia, Lithuania and Estonia, the full list
see it here. They understand that they are next if Ukraine loses.