read:
Kyle Beardsley and Victor Asal, Winning with the Bomb.  Journal of Conflict Resolution.  Vol. 53, no. 2 pp. 278-301. 

Iran.  Everything You Want to Know About the Iran Nuclear Deal.  The Economist, April 5, 2015.
https://www.economist.com/the-economist-explains/2015/04/05/everything-you-want-to-know-about-the-iranian-nuclear-deal

Question:
1.    On July 14, 2015 President Obama (along with the leaders of China, France, Russia, the UK and Germany) signed an agreement with Iran on the future of Irans nuclear program.  What were the terms of the deal? 

2.    Why did the United States and Iran both agree to sign the deal? 

3.    On May 8, 2018, President Trump withdrew from the agreement despite the fact that a majority Americans (according to a CNN poll) said the U.S. should remain.  Trump has described the deal as disaster, the worst deal ever, and so terrible that it could lead to a nuclear holocaust.  How do you explain Trumps decision to reject the deal?  How do you think the Iranian government is likely to respond and why?  Is the United States safer or less safe as a result?  Why do you think this is the case?