That only works on a small nuclear power like N. Korea when you’ve got a real President such as Trump in power, not an animated corpse named Biden backed by a deranged regime FULL of Marxist fluff-balls…
An Ex-Cold War KGB director backed by 10,000 deliverable nukes is a whole other ball game. One you don’t want to play hard ball against unless it’s the only option… When you find out he’s not bluffing it’s a little too late. Perhaps, maybe, 10 minutes to get into your bomb shelter if you’ve got one.