Ramba uchiverenga ndima ino - Pasi pemirairo yaJoseph Stalin Soviet Union yakaita kuti mapoka akasiyana-siyana aendeswe kune dzimwe nyika hondo yenyika yechipiri isati yatanga, ichirwiwa uye yapera (kubva kuma1930 kusvika kuma1950). Mukati mokudzingwa kwaJune
Muna 1941, pashure pokunge nyika dzeBaltic, Eastern Poland neMoldova dzatorwa, sezvakanga zvabvumiranwa neSoviet Union neNazi Germany muMolotov-Ribbentrop Pact, mukuedza kudzvinyirira nyika idzodzo kuti dzibatanidzwe nechisimba muSoviet Union, Soviet Union yakaendesa zviuru zvevanhu vasina mhosva kuSiberia.