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