Meanwhile, the Soviets lived in terror of a nuclear first strike by the West, which they expected at any time and that would utterly destroy their country.
My understanding is that it was Ronald Reagan, of all people, who realised that inflamatory rhetoric ("Evil Empire") is a bad idea when you are facing an opponent who is terrified that you are going to attack them - which the Soviets were (with some justification). Reagan deserves a lot of credit for helping end the Cold War - but it was largely achieved by discussion rather than threats.
I really hope we don't begin that stupendous silliness all over again.