The United States accused Iran on Tuesday of supplying Yemen’s Houthi rebels with a missile that was fired into Saudi Arabia in July and called for the United Nations to hold Tehran accountable for violating two U.N. Security Council resolutions. U.S. Ambassador to the United Nations Nikki Haley said information released by Saudi Arabia showed the missile fired in July was an Iranian Qiam, which she described as “a type of weapon that had not been present in Yemen before the conflict.”