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Officials are concerned members of the Khorasan Group survived and are plotting against the U.S. Barbara Starr has more.
400 Sunni tribesmen who had taken up arms against ISIS, were killed in the last 48 hours according to tribal leaders. Jim Sciutto reports.
Republican Sen. Saxby Chambliss says ISIS carries out their threats, and killing them is the only option U.S. has.
The blindfolded prisoners are brought into the dank gray room, one by one, and begin to tell us their stories. Full story
ISIS is allegedly using chemical weapons in Syria and Iraq, but U.S. officials have not confirmed these reports.
CNN's Ivan Watson profiles an American solider fighting with a Kurdish militia against ISIS forces in Syria.
An officer is in critical condition after suffering a hatchet wound to the head in what the NYPD call a terrorist attack.
Journalist Cormac Mac Sweeney shares his experience from the Ottawa shooting and how the shooter might've gotten in.