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 : Cameron said the group poses a `` greater and deeper '' threat than Britain has ever known . 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 .
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 .