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 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.

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.

Three representatives of displaced persons of the Baltic States bring a petition for President Truman.

Letter from Beria to Malenkov, 1 July 1953, taking blame for his inappropriate actions.

Letter from Beria to Malenkov discussing the events which took place in East Germany in the spring of 1953. Beria also discusses his actions after Stalin's death, asking for the forgiveness of the CPSU CC Politburo.

State Department memorandum summarizing policy toward Lithuania, Latvia, and Estonia following the Soviet incorporation of the Baltic States.

History of US relations with the Baltic states and the current policy of non-recognition of Soviet control.

Policy paper explaining the current status of Estonia, Latvia, and Lithuania and the US policy of non-recognition of their incorporation into the Soviet Union.

Explanation of US policy of non-recognition of Soviet control of the Baltic states.

Summary of past negotiations with the Soviet Union for cultural exchanges which include the Baltic States. The State Department wants to avoid the Soviets using these exchanges to erode the US policy of not recognizing Soviet control of the Baltics.

Policy recommendation to phase-out US financial support of Baltic embassies.

Deputy Chairman Colonel V. Konoplenko describes the counterintelligence operation known as HORIZON in general terms and tasks the Lithuanian KGB and its branches with specific counterintelligence tasks.

An annual report covering the work of the 4th Department of the Lithuanian KGB counterintelligence directorate, which was tasked with counterintelligence activities in the Federal Republic of Germany, in 1967.

This document provides a set of instructions concerning the matters that a newly-recruited state security officer who has not gone through the Chekist educational system needs to know in order to perform his Chekist duties in the successful manner.

Report from the Lithuanian Academy of Sciences on radiation levels detected in May 1986 following the Chernobyl nuclear accident. Both atmospheric tests and tests of food products like milk and honey showed elevated levels of radiation and radioactive isotopes which were “dangerous to the health of the population.”

In a follow up to their earlier May report, the Lithuanian Academy of Science summarizes levels of radiation detected between April and August of 1986 following the Chernobyl nuclear accident. Atmospheric tests showed a sharp rise in radiation levels in late April, up to 50 times higher than Soviet standards for safe levels of exposure. Levels dropped off in May, with occasional spikes. The report also summarizes tests of food products grown in Lithuania or imported from other Soviet Republics.

In February 1987, the Politburo of the Central Committee of the Soviet Communist Party – the supreme political authority in the Soviet Union – sought to address the ever-growing vocal support in the international community for the independence of the Baltic republics (Lithuania, Latvia, and Estonia). The resulting Politburo decree, titled “On the Measures for Counteracting Ideological Diversions against the Soviet Baltic Republics,” was summarized for the KGB of the Lithuanian Soviet Socialist Republic by Lt. Colonel Vilius P. Kontrimas, deputy chief of the First Department (foreign intelligence) on March 24, 1987.