With Abbas Milani | On January 21, 2017, President Donald Trump and his new national security team will launch their foreign policy reviews. Along with China, Russia, and the Islamic State (IS), a review of U.S. policy toward Iran is sure to rank at the top of this list. (...) On the campaign trail, Trump repeatedly called that agreement, known formally as the Joint Comprehensive Plan of Action (JCPOA)1between the P5+1 and Iran,“one of the worst deals ever made by any country in history.” (...) Trump's promised course of action would be a serious mistake.