Trump - US official says ISIS has yet to expand outside the Middle East . UK terror threat hiked to second - highest level due to events in Iraq , Syria . Cameron : We ' n't ignore Islamist extremists after James Foley 's killing . Trump : U.S. has no plans now to raise its own terror threat level .
Ex-U.S. official notes ISIS has yet to attack outside the Middle East . UK terror threat hiked to second-highest level due to events in Iraq , Syria . Cameron : We ca n't ignore Islamist extremists after James Foley 's killing . Spokesman : U.S. has no plans now to raise its own terror threat level .