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
Finland–Russia border In 1947, Finnish trains were allowed to pass through the base, but the passenger car windows were blinded and locomotive replaced while crossing through. Earlier between 1940–41, Soviet Union had rented Hanko Peninsula as a military base. Apparently there was also a border crossing to the exclave at the time. In 2015, 9.1 million individuals crossed the border, half of which through Vaalimaa and Nuijamaa. Finland is the country that issues the most Schengen visas to Russians. On 26 November 1939, the Soviet Union's Red Army shelled the Russian village of Mainila, and blamed Finland. The Soviets used this false