US has the superior Air Forces for sure (best in the world probably), Russia has the superior AA systems (like s-400/s-500)
In the conventional war US will win, but honesty... it will be a bloodbath. As an european i don't want to fight russians just because some US-warmongers wants it. (Frankly i'm retired vet, so seems like it will be my only son, who is on duty now!!! I DON'T LET HIM!)
If you want to destroy or *or as you usually say* liberate Russia, do it by yourself! Lets body bags flow back to US, not to Europe.