Putin doesn't want Ukraine to be a part of NATO, because that puts missiles to close to Russia. Why wouldn't anyone have a problem with that? That's the exact same basis for the Cuban Missile Crisis in the 1960's.
And let me assure you - Vladimir Putin is very serious. He also has the nuclear arsenal to kill at least 100 million people in case geniuses like you want to escalate.
Leftists want WWIII now - I've seen it all!
Leftists. Ha, how easy it is to paint people into a simplistic, divisive categorisation. Believing a tyranical dictator should not be appeased amounts to being leftist these days. There used to be a time where this would carry the moniker of right wing, how the world has changed.
Anyway, such meaningless distinctions are of little value to anyone but tribalists. However, for the record: I have no allegiance to left or right. I believe that what Vlad Putin is doing is a crime against humanity and that his behaviour should no longer be tolerated. How his demise is achieved, I leave to others. But that it needs to occur, for the safety of us all, is of critical importance.