Nuclear War - The Worst Thing Ever Happened to Humans?

Nuclear war is one of the few things that could really knock down our civilization, like a little bit back, a few steps back. In japan, in hirshima, nagasaki, the cities look fine. The radiation's not that bad. Ah, i think that could wipe out most of the world's industrial base. It seems to me crazy that the west isn't taking into account the risk of this kind of escalation,. Even if it's only a one % chance that's one% of something so horrible happening.