*1.Russia is heading for an outright defeat in Ukraine. Russian planning was incompetent, based on a flawed assumption that Ukrainians were favorable to Russia and that their military would collapse immediately following an invasion.
Russian soldiers were evidently carrying dress uniforms for their victory parade in Kyiv rather than extra ammo and rations. Putin at this point has committed the bulk of his entire military to this operation—there are no vast reserves of forces he can call up to add to the battle. Russian troops are stuck outside various Ukrainian cities where they face huge supply problems and constant Ukrainian attacks.
2.The collapse of their position could be sudden and catastrophic, rather than happening slowly through a war of attrition. >>>
5. The Biden administration’s decisions not to declare a no-fly zone or help transfer Polish MiGs were both good ones; they've kept their heads during a very emotional time.
It is much better to have the Ukrainians defeat the Russians on their own, depriving Moscow of the excuse that NATO attacked them, as well as avoiding all the obvious escalatory possibilities. The Polish MiGs in particular would not add much to Ukrainian capabilities. Much more important is a continuing supply of Javelins, Stingers, TB2s, medical supplies, comms equipment, and intel sharing. I assume that Ukrainian forces are already being vectored by NATO intelligence operating from outside Ukraine.