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1940 in the Soviet Union
NKVD operations
Soviet cover-ups
Joseph Stalin
Massacres in Russia
Massacres in Ukraine
Massacres in the Soviet Union
History of Smolensk Oblast
Soviet World War II crimes in Poland
War crimes in Russia
War crimes in Ukraine
World War II prisoner of war massacres by the Soviet Union
Mass killings by communist regimes
Massacres in 1940
1940 murders in the Soviet Union
World War II massacres of Polish intelligentsia
Persecution of intellectuals in the Soviet Union