I don't like to recommend books in these situations, but in this case you might find "Command and Control" interesting. It describes a huge number of near-disasters that I, for one, had never heard about (e.g. armed thermonuclear weapons accidentally dropping out of bombers in populated areas). Mind you, I am not even suggesting getting rid of the stockpiles, merely limiting them to the level required to constitute a reasonable deterrent. What we have today is far too great of a risk for the safety they are supposedly buying us.