Because we didn't have nukes back then. I'm surprised you don't know that.
Taihei Tengoku wrote:Wallenburg wrote:And that argument is correct. We have never had a war between two nuclear powers.
https://en.wikipedia.org/wiki/Kargil_War
MAD is the least bad alternative to winning by overwhelming force, not a method of eternal peace. Both sides used MAD to buy time to develop their capabilities to win WW3 outright, which included ABMs. For the USA this meant to simply continue existing and allow unsustainable socialism to implode, for the USSR this meant infiltrating the West with KGB and information warfare to Finlandize it so Russia would never face another Barbarossa again.
I concede. We have had one short skirmish between two nuclear powers. MAD still works, and continues to do so despite efforts of hawkish leaders to break it.