Yuri Linnik and Mark Naimark, are Soviet's from which occupation?
Mark Naimark Mark Aronovich Naimark (Russian: Марк Ароно́вич Наймарк ) (5 December 1909 – 30 December 1978) was a Soviet mathematician who made important contributions to functional analysis and mathematical physics.
NKVD prisoner massacres The NKVD prisoner massacres were a series of mass executions carried out by the Soviet NKVD secret police during World War II against political prisoners across Eastern Europe, primarily Poland, Ukraine, the Baltic states, Bessarabia and other parts of the Soviet Union from which the Red Army was retreating following the Nazi German attack on the Soviet positions in occupied Poland, known as Operation Barbarossa.