Makes me wonder what a hypothetical “fall of Kyiv” would look like today.
Once Ukraine surrendered there would then be a question of whether to allow "free Ukranian" forces to operate from inside NATO, or arrest them. Would there be a series of escalating incidents towards a direct NATO-Russia war?
Look for fall of Kabul, if you are looking for dramatic scenes.
I don't think poland has any chance to win against Russia, and I don't believe NATO would support an offensive, or even help defend Poland if Poland started it. And it seems implausible that Poland doesn't realize this, or is crazy enough to take the risk.
Honestly at best I do imagine trying to set a puppet govt as a buffer, but outright annexing that is so dumb of a thing that I can't even get started.