U.S. officials say they believe Iran was behind the drone attack last week at the military outpost in southern Syria where American troops are based.
Officials said Monday the U.S. believes that Iran resourced and encouraged the attack, but that the drones were not launched from Iran. They were Iranian drones, and Iran appears to have facilitated their use, officials said, speaking on condition of anonymity to discuss details that have not been made public.
Officials said they believe the attacks involved as many as five drones laden with explosive charges, and that they hit both the U.S. side of al-Tanf garrison and the side where Syrian opposition forces stay.
There were no reported injuries or deaths as a result of the attack.