</s>104-10210-10021 2025 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992 TOP SECRET 1. Attached is Annex A of the Top Secret study entitled, The Examination of the Bona Fides of a KCB Defector - Yuri T. KOSENKO dated February 1968 (copy 10). Copy 10 of this study had been forwarded to you carlier for your review. 2. Certain portions of Annex A Of this study are deleted since it contains information which bears on the security of ongoing, viable CIA operations, or is related therecto. 3. We request return of the study (copy 101) and Annex A when your review has been completed. Attachment: As Stated Above WARNING NOTICE - SENSITIVE INTELLIGENCE SOURCES AND METHODS INVOLVED E2 IMPDET CL BY 011340 TOP SECRET

Summary  
The documents detail the defection of Yuri T. Kosenko (also referred to as NOSKENKO or NOSENKO) from the Soviet Union in 1964, his subsequent asylum request in the U.S., and interactions between Swiss and U.S. authorities. His disappearance in Geneva during February 1964 is noted, along with Soviet diplomatic protests over his detention. Internal KGB assessments evaluate his potential value to intelligence agencies, referencing his alleged knowledge of KGB operations and classified information about espionage activities in the U.S. and Switzerland. The text also mentions other defectors, KGB personnel, and internal investigations into compromised agents. A 1967 entry references NOSENKO’s prior assignment to Geneva in 1962 to investigate SHAKHOV, a suspect with alleged American contacts. The documents highlight KGB disciplinary actions, including the dismissal of GRIBANOV for his role in NOSENKO’s assignments and internal meetings in Moscow addressing the fallout from his defection.  

Key People  
- **Yuri T. Kosenko (NOSKENKO/NOSENKO)**: Defected to the U.S. in 1964; served as Chief of the American Section in the KGB.  
- **GRIBANOV**: KGB officer implicated in NOSENKO’s assignments; later dismissed from the KGB.  
- **COLOUBLY**: KGB officer involved in monitoring NOSENKO’s activities.  
- **BANNIKOV**: Major General associated with NOSENKO’s case and KGB operations.  
- **SHAKHOV**: Suspect investigated by NOSENKO, alleged to have American contacts.  
- **Vladimir HUSTOV**, **GOLTSYNA**, **Ambassador DORINKIN**, **S.K. TSARAPIN**, **Felix KOVALEV**, **Nikolay ANTAMONOV**, **KCB officer Vladislav TULAYEVY**, **KGB officers L.I. PETUKHOV and P.P. BORISOV**, **George Herman SPRECHER**, **C.T. VIJAVSOV**, **Robert Lee JOINNON**, **Professor John H. THOMPSON**, **COLTSYN**, **GOLITSYN**, **GRIBANOV**, **Major General BANNIK**, **I. CUK**, **A.S. MEDVEDEV**, **MIDDEDVY**.  

Key Locations  
- **Geneva, Switzerland**: Site of NOSENKO’s disappearance in 1964 and his 1962 assignment to investigate SHAKHOV.  
- **Moscow, Soviet Union**: Location of internal KGB meetings and investigations related to NOSENKO’s defection.  
- **Washington, D.C., U.S.**: Where NOSENKO sought asylum and was detained.  
- **New York City, U.S.**: Residence of NOSENKO’s family post-defection.  
- **Anastasia (location unspecified)**: Mentioned in the context of KGB operations.  
- **KGB Headquarters, Soviet Union**: Central location for internal evaluations and responses to NOSENKO’s defection.  

Key Events  
- **NOSENKO’s Defection (1964)**: Triggered KGB investigations into compromised agents and internal disciplinary actions.  
- **KGB Meetings in Moscow (1965)**: Discussions about the impact of NOSENKO’s defection on Soviet intelligence operations.  
- **Investigation of SHAKHOV (1962)**: NOSENKO was sent to Geneva to investigate SHAKHOV, a suspect with alleged American ties.  
- **Soviet Diplomatic Protests**: Responses to NOSENKO’s detention in the U.S. and his asylum request.  
- **Family Status Post-Defection**: Mention of NOSENKO’s wife and children in the USSR, including their legal status as enemies of the state.  

Key Organizations  
- **KGB (Komitet Gosudarstvennoy Bezopasnosti)**: Central Soviet intelligence agency; central to internal evaluations, disciplinary actions, and espionage operations.  
- **GRU (Glavnoye Razvedyvatel’noye Upravleniye)**: Soviet military intelligence agency; NOSENKO reportedly assigned to its Information Department.  
- **CPSU (Communist Party of the Soviet Union)**: Mentioned in relation to KGB appointments and internal politics.  
- **U.S. Department of State**: Involved in interactions with Swiss authorities regarding NOSENKO’s asylum request.  
- **Swiss Embassy**: Engaged in communications with U.S. officials about NOSENKO’s detention.  
- **KGB Second Chief Directorate**, **KGB First Chief Directorate**, **KGB Seventh Department**, **KGB American Section**, **KGB Defense Directorate**: Specific KGB units and sections referenced in internal evaluations and operations.

JFK Declassified Files

104-10210-10021.pdf

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