The U.S. carried out an airstrike on a weapons warehouse in eastern Syria used by Iranian-backed militias, in retaliation for what has been a growing number of attacks on bases housing U.S. troops in the region for the past several weeks, the Pentagon said. In Wednesday's strike, two U.S. F-15 fighter jets dropped multiple bombs on a weapons storage facility near Maysulun in Deir el-Zour that was known to be used by Iran's Revolutionary Guard, U.S. officials said. “The President has no higher priority than the safety of U.S. personnel, and he directed today’s action to make clear that the United States will defend itself, its personnel, and its interests,” Defense Secretary Lloyd Austin said in a statement.