Ok, I see your points, I'm not going to continue arguing just for the sake of arguing. So we have numerous unstable situations regarding the possession of nuclear weapons, (Include N.K. in there as well) where the outcome is not certain, except it will probably be less than what would be desirable. There are some in this area of expertise who classify Iran as a rational actor, but even if that was true, their government is still on rocky ground, at best and their leadership is as unstable as it gets. Creating nuclear weapons can't be an easy task, it would seem like a possibility to rely on special ops, and more covert means to keep them from obtaining a nuclear weapon. If not that, then if negotiations fail, and Iran refuses inspections by the UN, then the UN and its most powerful members, should get together, and deal with it with a strong, concentrated military force. And if the Pakistan problem is as bad as you say, it seems something similar would need to happen there as well.