So? What's that got to do with Biden's response to Putin's actions?
For what reason? What does Ukraine bring to the table that it's worth the US dumping hundreds of billions in military aid into that country?
I don't think the US should be the world's policeman. The US dumped quite a bit of cash into pre-WW 2 China to help them fight Japan. Germany--Nazi Germany--did too (bet you didn't know that). China still got nearly completely overrun by Japan and we still ended up in a brutal war with Japan.
Appeasement, your example, makes a shitty comparison. We wouldn't be appeasing Russia by placing trade sanctions on them while not helping Ukraine particularly as but one example. Instead, we are really fighting a near proxy war at this point. That's bad. It's bad politics, it's bad policy, and it is dangerous. But then again, Joke Bribem does have a half-century track record of making horribly bad foreign policy decisions...