Petsamo Province
The Province of Petsamo (, ) was a Finnish panhandle and province from 1921 to 1922, when it was merged into the Province of Oulu. This panhandle used to give Finland access to the Arctic Ocean, until it was annexed by the Soviet Union in 1944. In 1921, Soviet Russia was forced to cede the area of Pechenga to Finland in exchange for the return of Repola and Porajärvi to Soviet Russia, following Finnish independence and military expansion into neighboring Russian territory and the Treaty of Tartu. In 1922, it was merged with the province of Oulu. In 1938, Lapland  was separated from the province of Oulu and the area of Petsamo became part of the new province of Lapland. In the Winter War of 1939-1940 the Soviet Union occupied Petsamo, but left the area back to Finland after the Moscow peace agreement of 1940 (Viipuri was ceded to the Soviet Union). In 1944, the whole of the former province of Petsamo was ceded to the Soviet Union as part of the preliminary peace agreement between Finland and the allies.