Video Shows Pentagon Employee Selling Secrets to Chinese Spy

In the videotape received by "60 Minutes", Gregg Bergersen, a civilian Pentagon worker with a high-security clearance, is seen accepting money, about $2,000, from Chinese spy, Tai Shen Kuo. Bergersen then tells Kuo how he will let him look at confidential documents. The documents listed the types of weapons the U.S. was selling to Taiwan and plans for a classified command and control system that Taiwan was going to apply.

Bergersen is currently serving almost five years in federal prison for communicating national defense information. Kuo, a naturalized American citizen, was sentenced to 15 years in jail for espionage. Both men pleaded guilty after being shown the tape and other evidence against them, CBS News reported.

According to Michelle Van Cleave, a former top American counter-intelligence officer, China may now be America's biggest espionage threat. "The Chinese are the biggest problem we have with respect to the level of effort that they’re devoting against us, versus the level of attention we are giving to them."

Van Cleave claims the Chinese have had the designs to all of the nuclear weapons in the U.S. arsenal for years and they have been after a lot more lately. "Sensors and optics…biological and chemical processes…all the things we have identified as having inherent military application," says Van Cleave. "I think we are a real candy store for the Chinese and for others."