"They cannot have a nuclear weapon," Trump said. "We don't want to see Washington D.C. or any of our cities or Israel or, frankly, the Middle East destroyed with a nuclear weapon." The President described preventing Iran from obtaining a nuclear weapon as the central objective of US policy. "This is all about we will not let them have a nuclear weapon," he said. Trump withdrew the United States from the 2015 nuclear agreement during his first term and has repeatedly maintained that any future agreement must permanently prevent Iran from acquiring a nuclear weapon.