The U.S. military has placed its principal base in northeastern Syria on full alert after intelligence indicated a potential attack by Iran or allied militia groups, according to a Syrian security source cited by Reuters on 23 June. Personnel at the installation have been ordered to take defensive measures and stand ready for possible rocket or drone strikes, the source said, without specifying a timeline or the scale of the expected assault. The heightened readiness comes as regional tensions rise. Earlier on Sunday, Iranian authorities said they had launched missiles toward a U.S. air base in Qatar, while American facilities in Iraq were also reported to be increasing their alert levels. U.S. forces in Syria and Iraq have faced repeated drone and rocket attacks from Iran-backed factions since the Gaza conflict escalated in late 2024. The latest precaution underscores the risk that any new strike could widen hostilities across the Middle East.