US Urges Americans to Leave Iran Immediately Amid Rising Tensions

The United States has issued a Level 4 "Do Not Travel" warning for Iran, urgently calling on all American citizens to leave the country immediately due to rising regional tensions and the potential for rapid military escalation. The alert, published by the US Virtual Embassy in Iran on September 19, 2026, cited a complex security environment and warned of possible flight cancellations, airspace closures, and other significant travel disruptions. The advisory stated that the regional security situation remains volatile, with Iran-backed Houthi forces engaged in hostilities against Saudi Arabia, including attacks on civilian airports. "This military conflict has the potential to escalate rapidly," the alert said. It further warned that Iran or groups supportive of Tehran could target US interests, businesses, and institutions overseas. The warning comes amid heightened rhetoric from both Washington and Tehran. President Donald Trump recently stated he is in "deciding mode" regarding the conflict, with "very big things" expected soon.