My life saying- why not, win or lose we both wake up sore in the morning. And to enter such situation realistically nowadays you must except the possibility of own death. No -matter the odds I stand my ground. Always have , always will. Now chances of a nuclear exchange could be higher should some-one have a similar attitude. I could die but you will never forget it.No I don’t think nuclear blackmail would work against a nation with an overwhelming number of nuclear weapons.
Consider NK, They can threaten but if they launch on ROK, Japan, or the US mainland they would get obliterated and cease to exist as a nation.
For nuclear blackmail to work against Russia China or the US one would have to deliver a devastating nuclear attack to anyone of those nations, MAD has to contain a devastating blow to a nation, not just a few population centers.
Oh oh so your going to punch me in the mouth are you. Well I’ll knee cap you and break both your arms and fracture your skull so go ahead swing away.