Here is an article that discusses the likelihood that the US had a major 4th mole in its intel community. The three known were CIA officers Edward Lee Howard and Aldrich Ames and FBI agent Robert Hanssen.
Former CIA officer Robert Baer has come out with a new book, The Fourth Man, based on work he did while active, and stuff he found out after.
The Fourth Mole (KGB spy inside CIA)
RUSSIAN PRESIDENT VLADIMIR PUTIN’S invasion of Ukraine has triggered a new freeze in relations between the United States and Russia. But for some veterans of the CIA and FBI, the spy wars that punctuated the first Cold War never really ended.
During the 1980s, in the final decade of the Cold War, three Americans who spied for the Soviet Union — CIA officers Edward Lee Howard and Aldrich Ames and FBI agent Robert Hanssen — are known to have helped Moscow identify, arrest, and imprison or execute most of the Soviet agents who were secretly spying for the United States. Those agent losses left the CIA virtually in the dark in Moscow for years. Ames and Hanssen were eventually caught and arrested and today remain in federal prison, while Howard defected to Moscow, where he died in 2002.
Now there is growing evidence that there may have been a fourth major American spy who was never caught. According to a new book, a mole hunt for the “fourth man,” who was suspected of being a CIA officer, began in the 1990s, but no one has ever been arrested or charged in the case. Secret details of that investigation are being disclosed for the first time in “The Fourth Man,” a new book by former CIA officer Robert Baer, which is due to be published Tuesday.
“The story of the Russian double agent in the CIA who got away may sound like some unfinished piece of business from the Cold War,” Baer observes in his book. But “it’s starting to look more like the mystery of the fourth man is a lot more historically significant than an old-school spy tale. It’s part of the much larger story of how America completely missed Putin and the KGB’s resurrection.”
The fact that U.S. officials believe there was a “fourth man” inside the CIA was first disclosed in 2003 in “The Main Enemy,” a book I co-authored with former CIA officer Milt Bearden. Baer has now provided a wealth of new details about the case, including the key role of a KGB agent who supplied crucial information to the CIA on the fourth spy. I interviewed several former CIA and FBI officials this week who agreed that there was a fourth mole.
“I believe there is a fourth man, and a lot of things point that way,” Jim Milburn, a former FBI counterintelligence agent who was involved in the investigation, said in an interview this week. “There is more that I can’t talk about. It all leads to my sense that there is a fourth man.”
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