Lt. Col. Yuriy Nosenko was a KGB defector who became a figure of significant controversy within the U.S. intelligence community. His case was documented in the Family jewels documents, and handled by CIA officer George Kisevalter. Wikipedia
The definitive Wikipedia entry for Yuri Nosenko. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Yuri_Nosenko
From the "Education on the Internet & Teaching History Online" "Yuri Nosenko was deputy chief of the Seventh Department of the KGB. educationforum.ipbhost.com/index.php?showtopic=2443
Any investigation of the Kennedy assassination must consider the case of Yuri Nosenko, including the important issue whether he was a "bona fide" or a "dispatched" defector. educationforum.ipbhost.com/index.php?showtopic=3277