President Donald Trump has withdrawn the United States from an international agreement aimed at controlling Iran’s nuclear program. The Iranian government agreed to the deal with the U.S., Britain, China, France, Russia and Germany in 2015. Since then, Trump has criticized the deal, calling it very badly negotiated. Speaking in the White House on Tuesday, the president said that Iran was responsible for unrest throughout the Middle East. Trump accused Iran of being the leading state sponsor of terror, saying it supported groups such as Hezbollah, Hamas, and the Taliban. But he added that no action taken by the regime has been more dangerous than the pursuit of nuclear weapons. Trump said that Iran’s leaders had refused to renegotiate the nuclear deal.