Operation Weserübung's effects on Sweden became strategically encircled by the German-Soviet pact. Since the Baltic states; Estonia, Latvia, and Lithuania; had been forced to accept "limited" Soviet forces on their soil, in the autumn of 1939, they were de facto more or less in a state of occupation. For Sweden and Finland, this meant that the only possible trade route to nations other than Germany and the Soviet Union, was through Petsamo harbour, in the far north of Finland. This seriously hampered the supply situation in both these nations. It also meant that an invasion of Sweden could be launched from almost any direction. Sweden
Latvia–Russia border On 16 January 1945, the area was transferred from the Latvian Soviet Socialist Republic to Pskov Oblast and renamed Pytalovsky District. Ever since Latvia regained independence, Latvia claimed the previous Latvian territory, on the basis of the 1920 Treaty of Riga. In 2007 a treaty on the Russian-Latvian state border was signed and ratified, and the Pytalovsky District remains part of Russia. Passage of the state border between the Russian Federation and the Republic of Latvia is determined on the basis of arrangements. According to the agreement on the Russian-Latvian State Border, the state border between Latvia and Russia starting