IDKFA
I am Become Bilbo Baggins
No I'm not. Only person who is off base is Putin. You can't for certain know what he will do.
My postulation is that he nukes Ukraine, and preserves his military. With a shell of a military, plus free agency to nuke non-NATO nations who knows where he'd stop - certainly not you.
My question to you is do you think he doesn't nuke Ukraine if he loses his ability to effectively fight a conventional war at scale? If the answer is yes, then the same will be true for other non-NATO targets (whether he does or doesn't, won't matter, cause then it's not a matter of now but eventually).
He's not going to use nuclear weapons on Ukraine. It would be pointless and not assist Russia in anyway. Even if Russia losses, they're not going to nuke Ukraine out of spite.