(CBS) "60 Minutes" has obtained an FBI videotape showing a Defense Department employee selling secrets to a Chinese spy for cash. The video, which has never been made public before, offers a rare glimpse into the secretive world of espionage and illustrates how China’s spying may now pose the biggest espionage threat to the U.S.

China may be the number-one espionage threat now. "The Chinese are the biggest problem we have with respect to the level of effort that they’re devoting against us,
Caught on Tape: Selling America's Secrets - 60 Minutes - CBS News