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
Russia–Sweden relations 1710; the territory was later ceded to Russia in 1721. All Estonian-Swedes from the island of Hiiumaa were forced to move to New Russia (present day Ukraine) by Catherine II of Russia, where they formed their very own village Gammalsvenskby. In the middle of the Napoleonic wars, 1803-1815, Tsar Alexander of Russia started a war against Sweden. The area included modern Sweden and Finland. Sweden relied on what it called ‘The Gibraltar of the North'--the new fortifications at Sveaborg near modern-day Helsinki. It was prepared for heavy attacks and long sieges. Nevertheless, it surrendered to the Russians in a matter