Any time in history a dictator starts invading, it’s never just one country. We literally just went through this with Hitler in WW2. Germany is just reuniting culturally similar people, and everyone looks the other way, until he isn’t.
This isn’t about just Ukraine. It’s not the first or the last. Russia would happily conquer US territory if there was no one to stop him.
So what’s your goal? Disband NATO, let the US fall?
Let China and Russia carve up the US between them?
Despite every valid criticism of the US, and they are endless, you admit it’s better to live as a citizen of the US than under a homophobic dictator.