Katrina Leung was supposed to be one of the FBI’s most valuable sources on China. Instead, she became one of the bureau’s most humiliating counterintelligence failures sleeping with the very agents ...

Add Yahoo as a preferred source to see more of our stories on Google. For decades, American counterintelligence has failed due to an organizational structure that encourages parochialism and ...

For decades, our nation’s tools and policies designed to detect and neutralize foreign intelligence activities have failed to deter our enemies. Instead, they have adapted to our approach. Act now on ...