And a Quick Thought on Iran

Of course, the worst case scenario for Iran is the Iranians throwing out their nuclear inspectors and developing a nuclear bomb.  Given that they would have to centrifuge enough uranium to make a bomb, that would take some time.  General estimates are about a year, which would give us some time to respond.

I would also guess that if the Iranians ever develop a nuclear bomb, Donald Trump will be rather pleased, actually, because it will give him the opportunity to say that Obama's deal failed.  Worse yet, he will probably get away with it, and conventional wisdom will be that Obama and Trump both equally failed to stop Iranian nuclear ambitions. 

My reason for thinking that is that conventional wisdom says exactly the same thing about North Korea.  Bill Clinton had developed and agreement with North Korea that, in exchange for financial assistance, North Korea would keep it s plutonium reactor and processor under seal and admit weapons inspectors to ensure that it was sticking to the agreement.  As long as the agreement held, North Korea did not, in fact, develop a nuclear bomb.  But then Bush II deliberately blew up the agreement.  The North Koreans kicked out their inspectors, unsealed their reactor, and developed a nuclear bomb.  Clinton and Bush are considered as having equally failed to prevent it. 

So I imagine if the Iranians respond to Trump blowing up this deal by developing nuclear weapons, the President who negotiated the arms control agreement and the one who destroyed it will be blamed equally, just like in North Korea.