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
NKVD means of persuasion" (torture) was sanctioned by a special decree of the state, which opened the door to numerous abuses, documented in recollections of victims and members of the NKVD itself. Hundreds of mass graves resulting from such operations were later discovered throughout the country. Documented evidence exists that the NKVD committed mass extrajudicial executions, guided by secret "plans". Those plans established the number and proportion of victims (officially "public enemies") in a given region (e.g. the quotas for clergy, former nobles etc., regardless of identity). The families of the repressed, including children, were also automatically repressed according to NKVD