IMO, Putin will just try to obliterate Ukraine now. There were some videos in the beginning of this thread diving into the Russian psyche that kinda went to the conclusion that Putin might end up thinking that if he can't have Ukraine, nobody will and he'll just try to decimate it as much as he can.
I don't think Putin can afford to obliterate Ukraine--even if he had the means, which I doubt he does. They can destroy
some of the infrastructure, but unless he uses nukes or chemical weapons--which, again, I don't he'd do--all a scorched-earth campaign would do is drain the ordinance of the Russian military (which doesn't grow on trees) for an uncertain purpose.
The main problem I see is that It would kill a
lot of Ukrainians, but not enough for to render them completely impotent and harmless. During WW2, the Western Allies and the USSR waged total war on Germany and engaged in as ruthless a campaign of destruction as ever seen. For instance, American artillery would systematically level entire towns and villages at the slightest sign of resistance. Yet, after the largest-scale, most expensive military effort in history, Germany only lost about
nine percent of its population--and that's including military losses. It was hugely painful, but in ten years their economy was humming and Germans were flocking to the colors again.
Of course, this is what I consider a rational analysis; Vlad may very well not be looking at this rationally.