Unless you find some way to simultaneously take out all nuclear installations in the world, or prevent their misiles from impacting your territory, this seems extremely hard.

Anyway, a retaliation strike from the USA would wipe out enough of Russia to end the war in a draw, if we can say so. They only have to remind Putin the common wisdom from all those years of cold war, if any of us attacks we are all toast.

Also, wasn't there some revelation, after the cold war ended, that Russia had known American nuclear codes or positions all along? That would certainly give them some advantage.

That's not 'victory' by anyone's definition. Also there are plenty of areas noone is targeting - remote Pacific islands, rural Australia, etc. Theybare going to be much better than a bunker.

Of course that's what they'd want the world to believe, right?

No, it didn't; their numerical advantage in main battle tanks over the #2 is, by ratio, much greater than their advantage in nuclear warheads.