The United States has advised its citizens against travelling to the Middle East, warning of possible flight disruptions, airspace closures, and escalating security risks across the region.

In a travel advisory, the U.S. Department of State said Americans currently in the Middle East should be prepared for flight cancellations.

It further said there could be periodic airspace closures and other travel disruptions as tensions persist.

“Some airlines in the region have postponed resumption of earlier flight schedules; others have cancelled some routes.

“Americans in the region should consider departing, or be prepared to depart should there be escalation. Americans outside the Middle East should seriously reconsider travel to and through the region,” it said.

The department further warned that those who do travel to or from the region should monitor information about airport and airline operations.

“U.S. diplomatic facilities, including outside the Middle East, have been targeted.

“Iran and groups supportive of Iran may target other U.S. interests overseas or at locations associated with the United States and Americans throughout the world, including U.S. businesses and other institutions,” it added.