Most of Europe is in NATO. NATO nations committing troops would likely drag all of NATO into war with Russia, increasing the chance of a nuclear war. That's not something NATO wants.
1. It's really doubtful Russia will commit to nuclear war.
2. If it does, it will do that regardless of whether or not NATO enters the war or not. Russia has signalled it has no intentions of stopping its war of conquest
I'd be curious what details you're drawing on to make those conclusions.
Regarding #1, do you think this is the case if Ukraine, for example, gains enough traction to attack Russian border cities as a means of preventing a Russian regrouping and counter-attack? Or is the word "commit" doing a lot of heavy lifting here?
Regarding #2, I've heard two scenarios that would counter this. If Russia wins in Ukraine, they likely have an interest in further expansion. If they think NATO isn't really as committed as they claim, a nuclear exchange into someplace like Poland would prove that, as well as giving the US a plausible way to back out of NATO commitments. That's a huge win for Russia. The previous statement about Ukrainian success provides the other example. Both cases are conditional on NATO activities.
Too much in Russia depends on the West. I'm not even talking about its industrial capacity which can't even produce military equipment without foreign components.
Their children study and live in Europe and the US. Their families live in Europe. Their business interests are in Europe.
I really doubt any of them will risk a nuclear war.
> Regarding #2
They've been quite vocal about this for a long time: they will continue war until stopped. At least until they claim all/most of the former USSR territories. Some of those territories (the Baltic states) are in NATO.
Describing it as "convenient" does not make also make it any less true or accurate, which are the true metrics a framework should be evaluated by. We can't disregard frameworks just because we don't want one side to benefit, we must evaluate frameworks on whether they represent reality.
