Quite the opposite. Putin has no fear of NATO so he is happy to make demands that will knowingly be unacceptable to UKR - he has no fear of NATO intervention.
Ukraine isn't NATO.
You failed to provide what I asked for. As a reminder, for a hypothetical invasion of Russia:
1) Please tell us, why its happening
2) how the various powers achieve the political consensus to do so
3) the NATO and Russian force structures
4) and how NATO is going to supply this effort
5) Also tell us what the invaders hope to achieve.
I'm not sure why you're hyper-fixated on some sort of Barbarossa style scenario. An invasion doesn't have to have it's goal be total occupation and annexation. And Russian elite's fear of NATO isn't just that they will march on Moscow. I outlined a couple of possible reasons for why a NATO intervention within Russia could happen. How the political consensus would be achieved would be highly specific to the circumstances. Some sort of political consensus has been achieved in past foreign actions both within a NATO umbrella and by a group of NATO members acting in concert. I'm not going to write you imaginary ORBATs for a hypothetical scenario, it's both time consuming and not useful. Logistics would also be highly situation dependent, but again I would point to this being precisely why Russia is paranoid about NATO bases near their borders and NATO member-states within the near-abroad. As to what they hope to achieve, it could be a variety of things, from regime change within Russia, to a support for an ethnic group's separatist aspirations, to leverage to force Russian concessions in some other area. If your claim is that NATO member states military action against Russia is inconceivable under literally any circumstances, I think we will have to agree to disagree. If you recognize that such action is at least under some circumstances a distinct possibility, then you have the reasons for Russia's concern.
They literally, completely, rationally are not real - they are stuff of propaganda and fiction. A convenient common external foe used by Putin to rally the flag.
They literally removed odious dictators. Putin is arguably such a leader (though I prefer the term authoritarian oligarchy because I think it's more meaningful).
Stop changing words. We were saying invasion, now you are saying intervention.
Answer my 5 questions above. They are the heart of any ability to invade Russia.
What's this "we"? You asked for an invasion scenario. I keep talking about the perceived threat.
People have this view of nuclear weapons as some ultima ratio regum. But they're really not. They're just really big bombs. They require technologically complex delivery systems, and can be intercepted. They can also be destroyed on the ground. And their use requires quite a bit of political will, given the hostility it's virtually guaranteed to incur upon their use. If you have a hardliner in office, with a firm grip on power, and a well functioning military machine, then it's possible to deter NATO with nukes. But if you have internal instability, a degradation of the military and security apparatus, considerable external pressure, and no guarantee of success, then suddenly you may not be willing to use nuclear weapons. Or worse, you may not be able to.
If you read my previous posts, I would surmise the most likely western response to a Russian civil war is to look smug and not give a shit any more.
I don't buy this for a second. The western response to civil wars in neighboring areas has been anything but that. Again, Libya, Yugoslavia, etc. There are many reasons to be concerned with such a scenario, not the least of it being nuclear weapons ending up in the wrong hands.
What possible benefit to NATO would involve an invasion of Russia, when a nuclear response is likely.
Back to you.
You're assuming two things, one that such a response is likely, and two that any nuclear response is successful. Neither is a given.
Thats precisely one of my points. What possible benefit would NATO gain by inserting itself into a total bloodbath by 2 parties that would be seen as equally guilty ?
That's easy, pick the party you like better, paint them as the "good guys" using the media machine, ignore their warcrimes, and then fragment a single, large, and often difficult to deal with country into smaller manageable chunks. A united large Russia, on a historic timescale, will always be at least a potential threat.