This item is undated and the year stated is a rough estimate.

Ambassador Steinhardt on rumors that the Soviet Union is planning to take control of Latvia and Estonia.

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.

This document is an answer to the letter from State Plan of Ukrainian Soviet Socialistic Republic to Academy of Sciences of USSR “About Rationality to Construct Cyclotron in UIPhT” (22 Feb 1940). The answer of academician Petr Kapitsa to this letter was very critical. Kapitsa wrote that UIPhT “during the last several years built a number of research installation but did not finish them. However it started to build new installations. Such activities of UIPhT can’t be considered as normal”. So Petr Kapitsa discouraged building a cyclotron in UIPhT, and this was one of the reasons why this institute did not become the leading nuclear center in USSR.

The Politburo directs the NKVD to permit the division of the combined secret cipher unit of the USSR Consulate General and Trade Mission in Urumqi into independent secret cipher units.

In this letter two nuclear scientists from UIPhT described the construction of the nuclear bomb and proposed to start activities in producing of the nuclear arsenal and make these activities secret. Two Ukrainian physicists were first Soviet scientists who revealed the way of producing the nuclear weapon (of course they did not know about the similar inventions of the western scientists which were made at the same time because of secrecy regime).

Memorandum to the Politburo of the Central Committee of the CPSU on Troop strength orders for the Red Army, May 9, 1940. Proposals for strengthening of Soviet armed forces.

The Soviet Union threatens intervention in Lithuania due to the alleged "disappearance of men from Soviet military garrison established in Lithuania."

Officials express concern about the Soviet Union's aggressive actions toward Lithuania.

Lithuanian, Latvian, and Estonian officials all anticipate that the Soviet Union will take measure to control the Baltic states.

The Soviet Politburo directs the NKO to approve over 9 million rubles in hard currency expenses for the 5th Directorate of the Red Army for 1940.

The Lithuanian government has accepted an ultimatum from the Soviet Union demanding that officials be brought to trial, the number of Soviet troops increased, and the Lithuanian government reorganized.

The Soviet Union has demanded that Estonia and Latvia allow Soviet troops to enter both countries.

Later referred to as the "Welles Declaration," this statement by acting Secretary of State Sumner Welles condemned the 1940 Soviet occupation of the Baltic states and set United States policy of refusing to recognize the new Soviet governments of Estonia, Latvia, and Lithuania.

Kharkov Institute scientists proposed in this document the concrete steps to build a nuclear weapon. The document demonstrates that Ukrainian physicists understood how to receive weapons grade uranium and elaborated concrete technical proposals to achieve this goal through uranium enrichment in centrifuge.

In this letter two nuclear scientists from UIPhT described the construction of the nuclear bomb and proposed to start activities in producing of the nuclear arsenal and make these activities secret. Two Ukrainian physicists were first Soviet scientists who revealed the method of producing a nuclear weapon (of course they did not know about the similar inventions of western scientists which were made at the same time under great secrecy).

The Soviet Politburo charges Narkomtsvetmet with concluding a 50 year concession agreement for the right to explore and exploit mineral deposits in Xinjiang and establishes a Directorate of Concessions for Exploration, Prospecting, and Exploitation of the Deposits of Tin in Xinjiang.

This document’s proposal about centrifuge received positive assessments from the leading Soviet academicians in Moscow.

Notes from L.A. Leont’ev's January 1941 meeting with Stalin, regarding drafts of two commissioned textbooks on political economy. Stalin gives his views on "planning", "wages", "fascism", and other issues.

In this document, leading Soviet scientists criticize the idea of Kharkov physicists to use Uranium in military goals, because they do not believe it is possible to realize nuclear fission in the current practical conditions faced. The Soviet National Committee of Defence received these skeptical assessments in 1941 and decided not to develop the military nuclear program.