The U.S. Department of State has issued a “worldwide caution alert” for American citizens, mainly in the Middle East, amid an escalation in tensions in the region. In a statement updated on July 20, the agency said that the “security environment remains complex with the potential for unforeseen escalation” due to fighting in the Middle East. “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,” the alert stated. Primarily for Americans in the Middle East On July 21, the department told U.S. citizens in the Middle East to “exercise caution and heightened vigilance” amid possible airspace closures, travel disruptions, and canceled flights. The alert did not name any specific country....