I think many users don't understand that why some people blame US and NATO for this conflict. I will try to explain from my perspective in a moderate tone. It doesn't mean it's right or it's justified to initiate the war. I hope the war could end immediately and no more death to come. It's just people have different view about how it even began.
NATO told Ukraine it could be a member in 2008 and Ukraine began its illusion it literally could become a NATO member ever since. So many years, US and other NATO countries never give clear message to Ukraine but give meaningless verbal support. The point is that it gives Ukraine bravery to counter Russia and even write it inside the constitution to become NATO member which is definitely intolerable for Russia. Without solid and concrete support from west, no post-USSR country should ever try this. US gave Ukraine fake hope, fake courage to provoke Russia instead of itself. US is hiding behind a weak proxy with meaningless support. There are some strategy equilibrium between major powers and have to appreciate each other's bottom line. Anyone who tries to break it has to think twice if I can take the consequences. If USA tells Ukraine clearly that I will not accept you as NATO member and if you have war with Russia I will stand by, I think Ukraine will choose to be like Finland and we will not see the conflict today.