They follow the same morals as the "US empire" though.
Also, it's circular reasoning. You believe that Russia is right according to Russian sources that don't seem very coherent, because you believe that Russia is right. I have yet to find any convincing evidence of Ukraine being a nazi country, and as the one that started the attack, the charge of the proof falls onto Russia. I have seen the "proof" they were using at the beginning of the invasion, and it was absolutely not convincing, it was some cherrypicking of obsolete links that didn't mean much anymore. And after that, most of the justifications used were sounding like Trump's justifications to attack random countries. Ironically enough, the US and Russia are very similar.
For me I believe in only supporting moral stuff, and I'm not going to defend an oppressive fascist dictatorship, even if they are attacking other fascists. And in this case, the second part is yet to prove.
Supporting the lesser evil is also what led to all current democracies falling into fascism and discrimination. If you take a look at France, Macron has been seen as the lesser evil, and has been consistently and successfully popularizing and supporting the far right. The lesser evil is still evil.