U.S. Department of State upgrades travel alert to travel warning . The demonstrations are `` likely to continue in the near future , '' the U.S. travel warning said . The United States is on a heightened state of alert, with the highest level in more than two decades. UK urges avoiding demonstrations and large gatherings .
U.S. Department of State upgrades travel alert to travel warning . The United States is on a heightened state of alert, with the highest level in more than two decades. UK urges avoiding demonstrations and large gatherings .