GenZedong

Meh. You're silly if you think western strategic planners see eastern European NATO members as any less fodder than they see Ukrainians as. They don't want to invite a strike on NYC for the sake of avenging a military base in Estonia. They don't want to invite a strike on Guam, Pearl Harbor, or Rammstein in return for avenging Estonians.

Now could the deranged, incompetent, thoroughly senile, prone to aggression and unable to think clearly Biden do so anyways? Possibly but that's not to be taken as doctrine or strategic thought of the US so much as one angry, mentally unstable old man who bought into too many conspiracy theories (Russiagate) and vaguely hates Russians because he lived through the cold war.

In many ways the nuclear umbrella is a bluff. I mean thinking logically assuming your vassal gets wiped out by nukes, why would it make sense for you then to commit suicide by cop by attacking the same country and getting wiped out yourself just to punish them? There might be some white solidarity with western Europe and I wouldn't test it by trying to wipe out Britain or France or Germany but Poles, Estonians, Baltic fascists, most Americans don't know much about them or care. A minor retaliatory gesture maybe. Handing out nukes so countries can "defend themselves" maybe. But striking back and inviting your own demise for someone you were using as a pawn anyways? Eh. I'm just not entirely convinced.

It might have made some sense during the cold war when the Soviets had massive tank and troop divisions and could convincingly sweep into Europe and take over France, Germany, etc, where the idea was if you didn't nuke them then, it was but the opening gesture of a wider war and invasion, but with modern Russia which they know couldn't stand against NATO's combined forces without paying a terrible and too high price which they simply aren't willing to do, and which they know deep down has no intentions of trying to occupy or liberate western Europe, it makes little sense.