http://en.wikipedia.o.../Cuban_Missile_Crisis
i don't think having nuclear weapons has kept the peace, seeing as how russia has had a nuclear arsenal to blow us to kingdom come, and the rest of the world is in turmoil. America could take out Iran in a jiffy, but how would that sit with the Middle East countries, and indeed the remaining nuclear nations. If Iran were to make a bomb, and it's very likely, that would surely lead to war with Israel, then America would be involved as its ally, what next, annihilation?