US issues worldwide travel warning amid Iran conflict

The United States issued a worldwide security alert on Saturday, July 18, 2026, urging American citizens to exercise increased caution and reconsider travel to the Middle East amid escalating military conflict with Iran. The State Department warned of a complex security environment with potential for sudden escalation, advising travelers to confirm flight schedules and monitor instructions from U.S. diplomatic posts.

The advisory follows a series of deadly exchanges. U.S. Central Command confirmed that two American service members were killed in Jordan on Friday, July 17, as U.S. and allied forces defended against Iranian ballistic missiles and drones. These were the first publicly confirmed U.S. fatalities in recent weeks, bringing the total number of American service members killed since hostilities with Iran reignited in February to 16. President Donald Trump called the deaths "very sad" and reiterated that Washington would never allow Iran to obtain a nuclear weapon.

In response, U.S. forces conducted a new round of strikes against Iran on Saturday evening at the president's direction, marking an eighth consecutive night of operations. Central Command stated the strikes were...