You can posture with spyplanes and missile tests all you like, but when you start lopping atomic bombs at each other you ruin most your own homes. Its the MAD principal that finally makes it so pointless. Iran is defying logic claiming not to have a nuclear weapon programme. The actions speak louder than their words. Having nuclear power plants inevitably leads to plutonium, weapons grade is quite feasible with plutonium. Why do you think there are so many atomic bombs in the world? Because the Governemnt has to do something with nuclear waste. Making bombs and thousands of them is what the Russian and US governments are ferociously guilty of – it will take years and years to decommission all these bombs. A defense system that when used spells the end of humantity and quality of life is not a defense system.