The latest one cites incidents attributed to the Islamic State and al-Qaeda in France, Russia, Sweden and Britain. It does not mention any specific intelligence suggesting the State Department believes an attack is about to happen, but expresses a general concern about the potential for more attacks.
“U.S. citizens should always be alert to the possibility that terrorist sympathizers or self-radicalized extremists may conduct attacks with little or no warning,” the alert states before listing potential targets that are pretty much anywhere people gather: tourist locales, transportation hubs, markets and shopping malls, local government facilities, hotels, clubs, restaurants, places of worship, parks, high-profile events, educational institutions and airports.
U.S. citizens traveling to Europe are urged to check the websites of the U.S. embassies and consulates for security messages, keep in touch with friends and family so they know your whereabouts and check local media for updates at the destination. They also encourage people to register in the State Department's Smart Traveler Enrollment Program.
This travel alert expires Sept. 1 … unless, of course, it's extended.