The Cuban Missile Crisis was a confrontation between the United States, the Soviet Union, and Cuba in the early 1960s during the Cold War. In Russia, it is termed the “Caribbean Crisis”, while in Cuba it is called the “October Crisis”.

The crisis ranks with the Berlin Blockade as one of the major confrontations of the Cold War, and is generally regarded as the moment in which the Cold War came closest to a nuclear war.

Declassified Documents

1960:

blankIndications of Soviet arms shipments to Cuba, weekly COMINT Economic Briefing [4 Pages]

1961:

blankSIGINT report on Cuban pilot training in Czechoslovakia [1 Pages]

blankSoviet merchant ship Nikolaj Burdenko delivers military cargo to Cuba [2 Pages]

blankOperators’ chatter reveals Cuban air force personnel to learn Russian [5 Pages]

blankRadar being installed; possible for use with artillery units [4 Pages]

blankSpanish-Speaking pilots training at Trencin Airfield, Czechoslovakia, on 31 May 1961 [1 Pages]

blankSIGINT report on Cuban pilot training in Czechoslovakia [1 Pages]

blankSoviet freighters scheduled to call Cuba in July 1961 [1 Pages]

1962:

blankHandwritten summary of basic national security policy document [1 Pages]

blankHandwritten summary of 1962 funnel messages on Soviet military and technical advisers in Cuba (Page 2) [2 Pages]

blankExtension of assignment of ASA analyst overseas (Page 2) [2 Pages]

blankReference to radar tracking on Russian equipment in Cuba [1 Pages]

blankDry cargo shipments to and from Cuba in Soviet ships, 1 January – 31 March 1962 [17 Pages]

blankCuban Air Force VHF communications procedure [3 Pages]

blankNew Soviet cargo ship en route Cuba with possible military cargo [1 Pages]

blankFirst ELINT evidence of Scan ODD radar in Cuban area [1 Pages]

blankCuban Air Force long-range flights [1 Pages]

blankElectronic intercepts in Cuban area [1 Pages]

blankNight flights of Cuban jet aircraft [1 Pages]

blankDIRNSA request for temporary assignment of vessel to Cuban waters until a planned collection vessel is ready [1 Pages]

blankMemorandum for Secretary of Navy discussing requests for Navy collection resources [1 Pages]

blankUnusual number of Soviet passenger ships en route Cuba [2 Pages]

blankPossible reflections of Soviet/Cuban trade adjustments noted in merchant shipping [2 Pages]

blankFurther unusual Soviet/Cuban trade relations recently noted [3 Pages]

blankWHIFF radar in Cuba [2 Pages]

blankStatus of Soviet merchant shipping to Cuba [2 Pages]

blankReflection of Soviet bloc pilot/technicians in Cuban Air Force training, 1 May – 4 Aug. 1962 [4 Pages]

blankNight aerial gunnery exercises by Cuban jet aircraft [1 Pages]

blankFurther information on Soviet/Cuban trade [2 Pages]

blankIncrease flight activity of Cuban Tactical Air Force [1 Pages]

blankFurther information on Soviet/Cuban trade [2 Pages]

blankCuban MIGS scrambled on two U.S. Navy patrol planes [2 Pages]

blankReporting instructions for SIGINT evidence of Cuban acquisition of offensive weapons system (Page 2) [2 Pages]

blankDefinition of reporting category “funnel” [1 Page]

blankNSA need for larger collection vessel than planned [1 Page]

blankNew radar deployment in Cuba [1 Page]

blankIFF signal in Cuban area [1 Page]

blankFurther information on cargo shipments to Cuba in Soviet ships [1 Page]

blankFurther information on cargo shipments to Cuba in Soviet ships [2 Page]

blankBlank sample log sheet for crisis actions (Page 2) [2 Pages]

blankDIRNSA msg to Services on collection effort (Page 2) (Page 3) [3 Pages]

blankKOMET III radar intercept report [2 Page]

blankHandwritten draft of DIRNSA reminder about funnel category (Page 2) [2 Pages]

blankHandwritten draft of DIRNSA note on reporting priorities (Page 2) [2 Pages]

blankIntercept of probable Cuban Air Defense Grid Tracking [1 Page]

blankFurther information on cargo shipments to Cuba in Soviet ships [2 Pages]

blankHandwritten draft of DIRNSA announcement of ad hoc group to improve collection and processing of Cuban material [1 Pages]

blankHardcopy version of DIRNSA announcement of ad hoc group to improve collection and processing of Cuban material (Page 2) [2 Pages]

blankDIRNSA directs movement of ASA troops to augment SIGINT effort against Cuba [1 Pages]

blankShkval passed messages to Alantika [1 Pages]

blankPassenger cargo vessel Nikolaj Burdenko related urgent message from cargo vessel Kura for Moscow [1 Pages]

blankSoviet vessels give positions and Odessa relayed very urgent messages from Moscow [1 Pages]

blankMessage intercepted from Soviet Metallurg Kurako addressed to all vessels in zone FOXTROT [2 Pages]

blankSretensk passed message to Moscow radio [1 Pages]

blankNikolaevsk reported a ship on approaching course [1 Pages]

blankNikolaevsk reported U.S. war ship continuing to accompany her [1 Pages]

blankSoviet cargo vessel Ustyuzhna carrying on cargo operations in Cuban port of Hoa [1 Pages]

blankNikolaevsk reported waiting at unidentified Cuban port awaiting a pilot [1 Pages]

blankFurther information on unusually high level of CRAFT pilots active on 18 October [1 Pages]

blankSummary of the day’s news – 23 Oct 1962 [1 Pages]

blankHandwritten draft of DIRNSA note requesting CRITICOMM communications [1 Pages]

blankSoviet cargo vessel Urgench alters course and is probably enroute back to port [1 Pages]

blankSoviet cargo vessel Bol’Shevik Sukhanov alters course and is probably enroute back to port [1 Pages]

blankSoviet cargo vessel Kislovodsk alters course to the North [1 Pages]

blankTemporary transfer of ASA personnel during training for shipborne collection [1 Pages]

blankSummary of collection vessel operations in September 62 [1 Pages]

blankSummary of ELINT and COMINT collection improvements in September 1962 [1 Pages]

blankAmendment of classification level for reports [1 Pages]

blankMemorandum on courier flights to Homestead AFB, Florida [1 Pages]

blankSPOON REST radars identified at three sites [1 Pages]

blankDIRNSA msg on requirements for improving collection ability (Page 2) [2 Pages]

blankFunnel reports revert to regular series [1 Pages]

blankHandwritten note on originating COMINT-derived warnings [1 Pages]

blankSummary of DIRNSA msg on level of support possible for military services (Page 2) [2 Pages]

blankSummary of arrangements for representation at JCS [1 Pages]

blankActivation of Air Force Security Service Emergency Reaction Unit (Page 2) [2 Pages]

blankHandwritten draft of DIRNSA msg on service arrangements for collection and reporting (Page 2) [2 Pages]

blankNaval Security Group discusses problems with communications and reporting facilities [1 Pages]

blankHandwritten draft of DIRNSA note on processing and reporting [1 Pages]

blankCommander-in-Chief Atlantic concurs with transfer of Cuban problem [1 Pages]

blankHandwritten note re NSA contribution to intel actions [1 Pages]

blankHandwritten summary of staff actions re Cuban crisis (Page 2) [2 Pages]

blankHandwritten draft of DIRNSA note on funding and level of collection against Cuba [1 Pages]

blankHardcopy version of DIRNSA note on funding and level of collection against Cuba (Page 2) (Page 3) [3 Pages]

blankProposal for a special national intelligence estimate on Soviet military in Cuba (Page 2) [2 Pages]

blankDIRNSA msg to Naval Security Group re fixed and shipborne collection (Page 2) [2 Pages]

blankCover letter and commendation letter on SIGINT contribution during Cuban crisis (Page 2) [2 Pages]

blankHandwritten note on renotating types of communications in Cuba [1 Pages]

 

1963:

blankDIRNSA requests results of hearability tests in Florida [1 Pages]

blankStatus summary for ASA operations (Page 2) [2 Pages]

blankMeeting to review reporting requirements on Cuban air defense (Page 2) [2 Pages]

blankStudy group established to review reporting on Cuba [1 Pages]

blankBuildup and changes to collection and reporting on Cuba [1 Pages]

blankDIRNSA proposal to Navy concerning courier service (Page 2) [2 Pages]

blankSummary of Soviet ships in Cuban ports, as of 19 June 1963 (Page 2) (Page 3) (Page 4) (Page 5) (Page 6) [6 Pages]

1969:

blankBuildup and changes to collection and reporting on Cuba [1 Pages]

Undated:

blankHandwritten summary of DIRNSA suggestion about long-term Cuban collection [1 Pages]

blankHandwritten note on DIRNSA wishes on level of effort [1 Pages]

blankRevised DIRNSA lists of funnel msg recipients [1 Pages]

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