Just curious on your thoughts here. Do you think it's possible that Ukraine is able to exhaust Russia into retreat? I have heard from some sources, albeit unreliable, that Putin only has a couple weeks before his coffers run out. Morale seems to be low amongst the Russian populace, and likely equally so amongst the Russian rank and file.
Added to all this, Europe and the USA are sending weaponry and sanctioning the hell out of Russia.
Lastly, Putin may have vastly underestimated the Ukrainian's patriotism. Seeing the president, former president, parliament, the Klitchko brothers, and hundreds of thousands more willing to stay and fight is nothing short of heroic.
Ukraine wont be receiving Putin's army with open arms
https://www.youtube.com/watch?v=SfkzOwoDB2A