Losing Kherson and Zaporizhia oblasts is hardly the end of the Russian federation. So for that reason alone I don’t believe he’ll go nuclear - an escalation of the bombing campaign is definitely on the cards though.
I'd normally agree but the almost certain yes referendum vite will make them from the Russian pov Russian territory in exactly the same way any part of current Russia is mate, and it doesn't matter in terms if who accepts it as such if Russia views it as such in terms of how they'd respond to losing areas if land.
It sounds bizarre to rationalize this, but it's true, I know many Russians whose opinion completely changed on Crimea as soon as it became Russian territory again.
People went from well yeah but it's not worth fighting over it to we must do everything to protect it as it's Russian land and people.
I've Saud before I'm I guess a realist in terms if how I view situations, and from a realist perspective that's how the scenario is. Question then becomes what is the realist view on how Ukraine truly view everything and honestly the US too (few governments tell you that). Only that will determine what ultimately becomes acceptable I'm terms of ending this mess.
Is there a way both sides save face and can sell it as 'winning' I dunno, total defeat either way though will likely end badly for the entire world.