The United States Department of State issued an unusual global travel warning this evening (March 22), calling on American citizens to exercise increased "worldwide caution", particularly in the Middle East.
The announcement noted that, in light of security developments, there is concern about disruptions to aviation, including temporary airspace closures, which could affect international flight schedules.
The announcement also mentioned attacks on American facilities in recent weeks, warning of the risk that groups supporting Iran may be attempting to harm additional American interests around the world, even outside the Middle East.
The Department recommends that American citizens staying abroad follow the instructions of local embassies and consulates, stay updated on specific travel warnings for each country, and prepare for possible changes to their travel plans.
The United Kingdom also updated its travel warning for the Middle East last week, while the British Embassy in the United Arab Emirates issued an update to its travel warning following the security escalation in the region, warning that the tensions could lead to damage to civilian infrastructure, transportation facilities, and sites related to Western countries.
Among the sites that may be affected, according to the announcement: hotels, roads, bridges, energy facilities, financial institutions, oil production facilities, water systems, as well as airports and transportation facilities.