ANNOUNCER: But were these Americans really an al Qaeda sleeper cell ready to strike? DENNIS O'HARA, Lackawanna Police Chief: If they were, they were deep asleep. ANNOUNCER: For the first time ...

However, terrorism experts said whether her assertion is accurate depends on how one defines "sleeper cell." We couldn’t find any publicly available, official intelligence community definition ...

Ever wonder why there was a sleeper cell of pro-Hamas Columbia students ready to bang drums, pitch tents and smash windows after the attacks of October 7? Because the university consciously ...