I am trying to play devil's advocate here, what world leader would tolerate their adversaries bringing missiles up to their border? Playing devil's advocate does not make me a Putin apologist for those of you who are intolerant of questions.
Putin made it clear decades ago that Ukraine was a red line as any Russian leader would, nato knew this and didn't care and now here we are. Nato is a war treaty as opposed to a peace treaty and now appears to be nothing more than a self fulfilling prophecy.
I never saw Russia expanding back into Europe, in fact many countries broke away from what was the Soviet Union peacefully for the most part. Some people go so far as to claim that Russia wants to expand all the way to Berlin, based on what, I don't know. Yes, wrong to invade Ukraine, I get that much, but what brought us to this? Now that Russia is a capitalist system as opposed to communist, is the competition just too much for the west to bear? Is that why nato expanded east?