Obviously enough, people like me are have not an atom of leftism in their bodies, being right wing conservatives right down to the quark level. But, that does not mean that we should ignore what the Left are saying, as at the cultural level they have power, while we do not. Hence, I follow some Left wing thinkers to keep an eye on the state of play. People like Umair Haque. In a recent piece, which I had a bit of trouble following he seems to be saying, correct me if I am wrong, that he favours a harder line approach to Putin, since de-escalation, negotiation and deterrence have failed. He thinks a no-fly zone may not lead to nuclear war, but he gives no evidence of this, and it is a hell of a way of finding this out by trying it. Anyway, this is one view from the Left, that sees Putin as engaging in Russian imperialism, and the quest to re-start the old USSR. I am far from convinced by any argument given, but the article does raise the point that powers can drift into bad situations like nuclear war, from indecisive policies. Or as I see it, from following the policies of the Left.
https://eand.co/are-we-headed-towards-nuclear-war-105132ec65d4
