There would be no fight without a Russian attempt to annex Ukraine.
Bomb Russia. That would be stupid.
So, since we can't go that route and have no business going that route, we shouldn’t do anything about Ukraine?
The U.S. can do something about Ukraine, as it is a much smaller country, and Kiev can be pressured much more easily to toss ALL of its anti-Semites and Fascists from positions of Gov’t.