The USA shouldn't even HAVE a response to Ukraine, other than that it created the conditions for war to become inevitable. So its "response" is to make its puppet dance for it.
That rationale seems it could be used justify nearly any aggressive war.
Actually bad guys have been the same. It is hard for people to understand or even stand the fact that their country and their countrymen could be evil. That is pretty much all there is to this. Everybody likes to believe the war they are fighting is for a just cause and will make the world a better place, and they think every other country doing the very same is evil.
We should all agree on the fact when we say "War for X reasons is evil" the real issue there is "War", not X which could be {religion, democracy, economic order, ...}
But honestly mostly people do if for things like resources, and influence and but like to sell as X. This is why everything you do is ok, but others doing it isn't. There are only finite resources, and this is a race condition.