The Soviet Union invades Finland, initiating the so-called Winter War. The Finns sue for an armistice and cede the northern shores of Lake Ladoga to the Soviet Union. They also cede the small Finnish coastline on the Arctic Sea. (nov 30, 1939 – mar 12, 1940)
Added to timeline:
Date:
nov 30, 1939
mar 12, 1940
~ 3 months and 14 days