The U.S. Department of Homeland Security has issued a general terrorism alert due to concerns about domestic escalation following America's direct involvement in the conflict with Iran. The statement noted that "the ongoing confrontation with Iran creates a tense security environment in the U.S.," and it is likely that pro-Iranian militias or local terrorism supporters may attempt to target American interests. Meanwhile, the State Department issued a worldwide travel advisory recommending that American citizens exercise increased caution while abroad, due to concerns about hostile demonstrations and flight disruptions in the Middle East.