It was all smiles out on the range last week when, against a deep blue sky, an American interceptor rocket took out an incoming “enemy” long-range, missile (which in a real attack would be carrying a nuclear warhead). Generals and Congressmen and women jumped for joy. But what was there to be joyous about? Over the decades of the Cold War the nuclear deterrent was supposed to be the instrument that kept the peace. MAD, it was called- Mutually Assured Destruction. Simply put, if you attacked me you might catch me by surprise and destroy many of my cities and military bases, but in fact you wouldn’t dare do it because beyond surprise is my “second-strike force”. Hidden away, deep underground, invulnerable to attack, I can retaliate with that. So in real life you will not dare attack me and I won’t attack you. That is a stalemate. That is...