If 97% of Russia's troops truly are in Ukraine...then, look, ok, NATO is a defensive military alliance, so they won't... but for sure there must be a few politicians and NATO generals who think "mmmmm....all those military, of that nation run by a criminal gang (yeah yeah as if the US ain't corrupt, blah blah), a nation that fuk'n invaded a sovereign nation coz their godfather ordered it so, all of them military...sitting so close together...like ducks....a few rockets, a few air-raids, and we make a deal with China about how to divvy it up. Russian Empire down the toilet. But yes, NATO is a defensive alliance, so it won't happen, ...darn!