I am not seeing the people of Ukraine being very willing to fight, it's a mass exodus right now, nor do I think he is dumb enough to believe that he can hold Ukraine. Best case scenario is that this ends quickly with surrender and that they sign the demilitarization agreement.
I mean being defiant is all well and good, but all it got us was a destroyed infrastructure and 3 decades of economic setback and we were in a much better position as far as military was concerned.