Human being has a weakness. They have fear when uncertainties come.
Nations between Nations, there exist to a certain extent, a doubt of TRUST. When this doubt is extended and enlarged, by whatever reasons, the uncertainties about what each will do to the others, fear of conflict starts to emerge. As it gets on bigger and bigger, when nothing could be done to resolve it, the anxieties of war comes to each other's mind.
I am sure that in the 60's, neither the American nor the Soviet wanted to go to war against each other. Each side was trying to play a game of "bluffing". Even the Cuban Missile Crisis, never represetns a direct attack on the soil of the United States was eminent. For those who would hope to rush to war, full-scale strike would have happened which at the end of the day would have ended the world.
"If Tomorrow War Comes" the lyrics, has triggered me to explain my thoughts and replies to worries about war. Glad that today, the cold war is over and it is only existent in this world of ours - namely, the Computer Gaming World.! :rotfl: