On a question about that, one has just to look at what's going on in Pakistan today. For a while, Pakistan was a stable democracy and developed nuclear weapons without strong objection from the international community, in the hope that perhaps India and Pakistan would be in a stalemate. But now the future of Pakistan is anything but certain. I agree with you that in the future, if Saudi Arabia—which is, after all, a dictatorship without the support of the masses, necessarily—were to develop or purchase nuclear weapons, one could not make a reliable prediction about who would be in control of that nuclear stock 10 or 15 or 20 years from now.
The world changes very quickly. Thirty or forty years ago, nobody could have predicted that Iran would be the worst enemy of western democracies and Israel, and nobody could have predicted that perhaps the Saudi government would become an ally of Israel and western democracies in trying to make peace. Self-interest is a strange motivator.
The importance of great leadership is not to anticipate what's predictable, but to anticipate what's unpredictable. Your government and my government both have to come to grips with a very unpredictable world. The one thing that is entirely predictable is that if Iran does get nuclear weapons, there will be an end of nuclear proliferation restrictions. The arms race will build up and the world will be a far less safe place.