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CNN's Jim Sciutto spoke with Defense Secretary Chuck Hagel about the CIA, fighting ISIS and the failed hostage rescue.
Brian Todd looks at a Senate report on enhanced interrogation techniques and if it led to finding Osama bin Laden.
CIA Director John Brennan has ordered a review of the agency's organizational structure amid new terror threats.
A suicide car bomb detonated near an Iraqi government building, killing at least four people. CNN's Jim Sciutto reports.
CNN's Jim Sciutto reports there may not be enough drones to keep up with the U.S. battle against growing terror threats.
The hunt to track down ISIS executioner 'Jihadi John' is underway after another beheading video surfaces.
CNN's Brian Todd outlines the difference of the latest ISIS execution video and the clues it might give authorities.