Finnish Democratic Republic

The Finnish Democratic Republic (Finnish: Suomen kansanvaltainen tasavalta or Suomen kansantasavalta, Swedish: Demokratiska Republiken Finland, Russian: Финляндская Демократическая Республика), also known as the Terijoki Government (Finnish: Terijoen hallitus), was a short-lived puppet state of the Soviet Union in occupied Finnish territory from December 1939 to March 1940. The Finnish Democratic Republic was established by Joseph Stalin upon the outbreak of the Winter War and headed by Otto Wille Kuusinen to govern Finland after Soviet conquest.

Source: Wikipedia — Finnish Democratic Republic (CC BY-SA 4.0)