If Russia threatened war with the US, if the US didn't give them land, should the US back down and give them land to avoid war?

In their latest video about the Ukraine war the guys once again reiterated that Ukraine should just have given up all the land that Russia asked for before the invasion to avoid war. So I am just following their logic here. Let's say Russia wanted Alaska or, better yet, California and threatened war if their demands were not met. Does that still apply?

Should the US just give in to Russia's demands? After all, war is bad, guys. Think of all the lives that would be lost if that war started. Wouldn't it just be better if the US gave up California? How would Paul feel about being Russian instead of American? Or is there going to be some special pleading here explaining to me how that's different?

Or maybe, just maybe, do you think that perhaps it's not a good idea for the world to give in to the demands of a dictator who makes speeches about "blood and soil" and "restoring the Russian empire" after all?