Trump Decertified The Iran Nuclear Deal. Now What? WASHINGTON, DC - OCTOBER 13: U.S. President Donald Trump makes a statement on the administration's strategy for dealing with Iran, in the Diplomatic Reception Room in the White House, October 13, 2017 in Washington, DC. President Trump stated that the Iran nuclear deal is not in the best interests for the security of the United States, but stopped short of withdrawing from the 2015 agreement.(Photo by Drew Angerer/Getty Images) After describing it as the “worst deal ever” and threatening to scrap the entire accord, U.S. President Donald Trump has decertified the Iran nuclear deal, describing it as against U.S. national security interests, and outlined significant measures targeting the regime in its entirety. Trump took a major step in ordering the Treasury Department to fully sanction Iran’s notorious Revolutionary Guards (IRGC), describing the entity as Iranian Supreme Leader Ali Khamenei's "corrupt terror ...