Deportation of Koreans in the Soviet Union

Nearly 172,000 Koryo-saram (also called "Koryoin" or "Soviet Koreans") were forcibly transferred from the Russian Far East to unpopulated areas of the Kazakh SSR and the Uzbek SSR in 1937 by the NKVD on the orders of Soviet leader Joseph Stalin and Chairman of the Council of People's Commissars of the Soviet Union Vyacheslav Molotov. One hundred twenty-four trains were used to resettle them 6,400 kilometres (4,000 mi) to Central Asia.

Source: Wikipedia — Deportation of Koreans in the Soviet Union (CC BY-SA 4.0)