We (The USA) used the same threat basis on Cuba. They were standing down or WW3 was on, they had as long as it took for us to organize an invasion force (basically call up 100% reserves and National guard) to see things our way or get a massive boot up their ass and failing that massive first use nuclear strikes.
Of course the Russians and Cuban putting Nukes on rockets 5 mins from Miami to New Orleans and all in between, and 7-10 minutes everywhere else WAS an existential threat to the United States.
Ukraine was exporting criticism of Russia and blocking Russias life long dream of a warm water port (How dare they think it was theirs!)
Im not comparing the essence of the events I’m saying that the nuclear threat has been already used and much more profoundly, and with much more certitude.
•Ours was: “do this or fucking die”
•Putins is like “it could happen”