The U.S. government has issued a travel advisory for American citizens worldwide due to the escalating tensions with Iran. The U.S. warned of the possibility of unforeseen events such as flight cancellations, airspace closures, and terrorist attacks on U.S.-affiliated facilities, urging Americans residing in the Middle East to exercise extreme caution. It also recommended reconsidering travel plans or itineraries that include the Middle East. This follows an incident in March where U.S. embassy facilities were targeted for attack, leading to heightened international anxiety about the potential for the conflict between the U.S. and Iran to escalate into a full-blown war.