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Digital Archive International History Declassified

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  • September 12, 1945

    Cooperation with the Military Intelligence

    Letter regarding an intelligence sharing agreement between the Lebanese Police and Military Intelligence.

  • July 04, 1946

    Report from DS Chief in Sliven Region on Disclosed Military Conspiracy

    A report on the investigation of a political conspiracy, said to be organized by Metodiy Chavdarov, a colonel at the Sliven garrison. The arrested colonel and his accomplices allegedly conspired to overthrow the Fatherland Front government, once the Soviet troops leave the country.

  • February 10, 1951

    Telegram from Yumashev to Stalin

    Intelligence reports from the Fifth Navy Radio Network from 7 and 9 February reporting that there have been increased amounts of radio transmissions between naval commanders of the US forces in the Far East, and that evidence suggests that the US command is preparing a landing operation on the west coast of Korea.

  • September 01, 1958

    Letter from T. Zhivkov to Soviet Presidium on Training of Bulgarian Military Intelligence Officers at Intelligence Courses in the USSR

    Todor Zhivkov requests from Moscow training of Bulgarian intelligence officers.

  • October 02, 1958

    T. Zhivkov’s Report at the Bulgarian Plenary Session on the Middle East Crisis

    A report based on military intelligence information and on Zhivkov's conversation with the Soviet leader Nikita Khrushchev.

  • September 05, 1961

    Ministry of the Interior Bulletin on Anti-Bulgarian Activity of Greece and Turkey

    The Ministry of Internal Affairs reports its intelligence findings on the military cooperation between the US, Greece and Turkey.

  • July 05, 1963

    Bulgarian Ministry of Internal Affairs, Information Report on NATO

    On 5 July 1963 the Bulgarian Ministry of Internal Affairs completed an information report on NATO's activity during the Cuban Missile Crisis. In the report, the ministry outlines detailed espionage carried out by NATO agents. According to the report, the NATO Military Intelligence Services provided instructions for NATO member-states' military attaches stationed in Warsaw Pact countries and agents they could get to cooperate with them. Agents were to observe and report specific military intelligence collecting in Warsaw Pact countries -- arms deliveries, missile sites, military movements, etc. The report also includes explanation of how the attaches carried out their intelligence gathering -- reading official press, speaking in Russian and misrepresenting themselves as Russian, etc . The Bulgarian Interior Ministry notes that Western governments were well-informed of Bulgarian military structures -- including exact formations and secret designations.

  • December 01, 1977

    Agreement between the Soviet KGB and Czechoslovak Ministry of the Interior from the summer of 1978 to 1980

    In order to combat the perceived threat of hostile, foreign special agents operating on Soviet and Czechoslovak territory, the two parties agree to centralize their efforts to ensure the security of the two countries. In order to counter the special agents of capitalist countries and preserve the security of state secrets, the two parties decide to exchange counter-intelligence activity on subversive activity in Czechoslovakia, the Soviet Union and other socialist states. The two parties agree to focus on citizens of capitalist countries such as the United States, England, France and other NATO member nations and citizens of the People's Republic of China and the German Democratic Republic in their intelligence efforts. Specifically, the parties agree to monitor citizens of these countries working in Czechoslovakia and the Soviet Union and people working for representative agencies of the aforementioned countries. Also being monitored are Czechoslovak and Soviet citizens returning from capitalist or developing countries, corresponding with people in capitalist countries and having an address in a capitalist country. In conclusion, the KGB and Czechoslovak Interior Ministry agree to regular, bilateral exchange of information on hostile residents of both countries who are thought to be in the employ of the special intelligence services of NATO countries and China.