<p>ISIS claimed responsibility for the Sept. 15 explosion at the Parsons Green Tube in Fulham, London, U.K. The terror threat
level in the U.K. has been raised to "critical."</p>| <p>ISIS claimed responsibility for the Sept. 15 explosion at the Parsons Green Tube in Fulham, London, U.K. The terror threat
level in the U.K. has been raised to "critical."</p> |