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Chernobyl Nuclear Accident, 1986

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Soviet Nuclear History

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Shelest, P. IU. (Petro IUkhymovych)

1908- 1996

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Soviet Union. Committee for State Security (KGB)

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Mitrokhin, Vasili

1922- 2004

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United States. Central Intelligence Agency

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Mitrokhin Archive

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Ukraine. Committee for State Security (KGB/KDB)

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Mikhail Gorbachev, 1986

Gorbachev, Mikhail Sergeevich

1931- 2022

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February 22, 1940	Letter from State Plan of Ukrainian Soviet Socialist Republic to Academy of Sciences of USSR, 'About the Rationality of the Cyclotron Construction in UIPhT' This letter informed the Academy of Sciences that UIPhT asked the government of the Ukrainian Soviet Republic to allocate 75 thousand rubles for designing of the cyclotron, and 1,5 million rubles for its building. The State Plan asked an advice on necessity to build the cyclotron.
March 7, 1939	Letter from People’s Commissariat of Power Plants and Electrical Industry to the Council of People’s Commissars of USSR, 'On the Organization of the Research Activities on the Nuclear Atom' In this letter the Soviet minister proposed to the Soviet government to concentrate the nuclear research in Ukrainian Institute of Physic and Technology (UIPhT) and to locate in Kharkov the nuclear scientists from Leningrad Institute of Physic and Technology because Kharkov institute had very good base for the nuclear studies. If this proposal was realized Kharkov could become more important Soviet nuclear center than Moscow or Sarov. In any case this letter of people’s commissar recognized the prominent role of the Ukrainian Institute of Physic and Technology (UIPhT) in the Soviet nuclear science.
January 24, 1994	Letter of President L. Kravchuk to Speaker of the Verkhovna Rada I. Plyushch Ukrainian President Kravchuk describes the completion of a trilateral agreement with the United States and Russia regarding the dismantling of Ukraine's nuclear weapons.
June 3, 1993	Treaty on the Guarantees of the National Security of Ukraine in connection to its Accession to the Treaty on the Non-Proliferation of Nuclear Weapons 1968 (Draft) Draft of a legally binding agreement for national security guarantees to be signed in conjunction with Ukraine's signing of the Treaty on the Non-Proliferation of Nuclear Weapons.
June 3, 1993	Letter from Foreign Minister A. Zlenko to President L. Kravchuk on Draft Treaty on Security Guarantees The Ukrainian Ministry of Foreign Affairs sends a draft of a legally binding agreement between Ukraine and the five permanent UN Security Council members to be signed in conjunction with Ukraine's accession to the Treaty on the Non-Proliferation of Nuclear Weapons.
December 11, 1992	Memorandum of the Ministry of Foreign Affairs of Ukraine In light of the Verkhovna Radas' analysis on Ukrainian accession to the Treaty on the Nonproliferation of Nuclear Weapons, the Ministry of Foreign Affairs clarifies its position on nuclear weapons and assures its allies that it is working towards disarmament.
December 10, 1992	Draft Joint US-Russia Statement Regarding Security Guarantees/Assurances for Ukraine Joint statement by the United States and Russia giving security assurances in recognition of Ukraine's steps toward denuclearization.
November 18, 1992	Report of Ukrainian Foreign Minister A. Zlenko to President Kravchuk Letter about negotiations with US Ambassador to Ukraine R. Popadiuk regarding security guarantees for Ukraine
June 23, 1992	Letter from US President G. H. W. Bush to Ukrainian President L. Kravchuk Bush addresses Ukraine’s security concerns following its commitment on May 24 in Lisbon to join the Non-Proliferation Treaty as a nonnuclear state.
2010	Sergey Khrushchev on Crimea [excerpt] Sergey Khrushchev, son of Nikita Khrushchev, recalls the 1954 transfer of Crimea from Soviet Russian to Soviet Ukraine. At the time it was an uncontroversial decision, but later after the fall of the Soviet Union the loss of Crimea was seen in a negative light by the Russian public.