Russia has no right to decide who Ukraine allies itself with, and Russia has been a belligerent wrecking ball to all of its neighbours that aren't either in NATO or effectively a Russian puppet. It did the same thing to Moldova before Ukraine, and it did the same thing to Georgia before Moldova. You know which countries Russia hasn't touched? All of the ones that joined NATO.
And don't spout that bullshit line about NATO bordering Russia. NATO has bordered Russia for over 20 years without Ukraine. 25 years if you include Kaliningrad.