If these documents are legitimate , they 'd suggest that ISIS has a grand strategy and is willing to kill thousands -- including civilians -- using weapons of mass destruction to further its aims . 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 will not be cowed by this barbaric killing" Score: 6 Spokesman : 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 will not be cowed by this barbaric killing" Score: 6 Spokesman : U.S. has no plans now to raise its own terror threat level .