A missile struck a helipad inside the U.S. Embassy compound in Baghdad early Saturday, according to two Iraqi security officials. Video footage showed smoke rising over the sprawling embassy complex following the reported strike. The U.S. Embassy compound in Baghdad, one of the largest American diplomatic facilities in the world, has previously been targeted by rockets and drones launched by Iran-aligned militias. There was no immediate comment from the U.S. Embassy. On Friday, the embassy renewed its Level 4 security alert for Iraq, warning that Iran and Iran-aligned militia groups have previously carried out attacks against U.S. citizens, interests and infrastructure.