President Trump issued an Executive Order for the imposition of U.S. "sanctions with respect to Iran's iron, steel, aluminum and copper sectors, the regime's largest non-petroleum-related sources of export revenue". "Tehran can expect further actions unless it fundamentally alters its conduct", warned an accompanying statement, while adding Trump's hope "to someday meeting with the leaders of Iran in order to work out an agreement and, very importantly, taking steps to give Iran the future it deserves". Iran responded to the sanctions the following day, saying they "counter the basic principles and regulations of international relations" and arguing that "the responsibility for repairing the damages [potentially caused by the sanctions] lies on the U.S."