The U.S. failed to stop a deadly attack on an American military outpost in Jordan when the enemy drone approached its target at the same time that a U.S. drone was returning to base, U.S. officials said.

The U.S. failed to stop a deadly attack on an American military outpost in Jordan when the enemy drone approached its target at the same time that a U.S. drone was returning to base, U.S. officials said.