Nah, it's just but possible for poorly equipped Russian army that struggles against also poorly equipped (mostly scarce and older generation heavy weapons, almost no airplanes and old choppers etc) Ukrainian army. I really don't see how could they wage war against serious weapons and plenty of fresh and trained soldiers NATO members have. The only option would be a nuclear attack but then there is no winner, is it? If I had to guess that's more war industry sending fear to benefit from it.