@dave
I've heard 2 claims these days regarding Russia:
1) that it's committing war crimes
2) that it's committing crimes against humanity.

Now, I don't know whatever might be the correct definition of a war crime, but considering there's a war going on between Russia and Ukraine, I wouldn't be surprised that war crimes are happening.

But regarding claim 2), when I think about crimes against humanity, I think genocides, maybe mass rapes, things like that, and I doubt we've reached that point.