So did we when we destroyed Iraq and Afghanistan and created ISIS. Why should the country that lied and did those things be trusted about the cause of the war now? The war started in 2014 with the US coup and the slaughter of ethnic russians by nazi militias that were later incorporated into the military. Im the eight days before the invasion, the shelling there increased manyfold while the US predicted an invasion on this day, no wait, I mean this day. We forced the invasion, we got the war we wanted, and now that an entire generation of Ukranians are in the ground and the military is black-bagging guys to the front lines, now that Blackrock is getting fat off the liquidated assets, now you libs are trying to cope with your buyer's remorse for a war you though would end in Moscow by christmas by braying about who's responsible. If you really care about knowing who's responsible, just count the new swimming pools in Langley.

TLDR Russia is taking it's most logical path forward in a no-win scenario that the US went to extraordinary, murderous lengths to orchestrate.