Allied intervention in the Russian Civil War Powers to withdraw from North Russia and Siberia in 1920, though Japanese forces occupied parts of Siberia until 1922 and the northern half of Sakhalin until 1925. In 1917, Russia was in a state of political strife, and public support for World War I and the Tsar was dwindling. The country was on the brink of revolution. The February Revolution changed the course of the war; under intense political pressure, the Tsar abdicated and the Russian Provisional Government was formed, led initially by Georgy Lvov and later by Alexander Kerensky. The Provisional Government pledged to continue fighting the Germans on
Polish Operation of the NKVD were about 30%, while in the Belorussian SSR... the Polish minority was almost completely annihilated." Timothy Snyder gives a conservative estimate of 85,000 confirmed Poles executed simultaneously across the country. Almost all victims of the NKVD shootings were men, wrote Michał Jasiński, most with families. Their wives and children were dealt with by the NKVD Order № 00486. The women were generally sentenced to deportation to Kazakhstan for an average of 5 to 10 years. Their children were put in orphanages to be brought up as Soviet, with no knowledge of their origins. All possessions of the accused were confiscated.