Robert Hanssen, F.B.I. Agent Exposed as Spy for Moscow, Dies at 79

 Robert Hanssen, F.B.I. Agent Exposed as Spy for Moscow, Dies at 79 - The New York Times (nytimes.com)

Robert Hanssen was arrested in a Virginia park in February 2001 after he left classified documents for his Russian handlers. He was sentenced to life in prison.Credit...FBI/Newsmakers, via Getty Images