Geography of Russia , the Russian border is the world's longest. Along the 20,139-kilometer land frontier, Russia has boundaries with 14 countries: Norway, Finland, Estonia, Latvia, Lithuania, Poland (via the Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, Mongolia, the People's Republic of China and North Korea. Approximately two-thirds of the frontier is bounded by seawater. Virtually all of the lengthy northern coast is well above the Arctic Circle; except for the port of Murmansk—which receives currents that are somewhat warmer than would be expected at that latitude, due to the effects of the Gulf Stream—that coast is locked in ice much of the
Arctic naval operations of World War II 1942. The number of westbound cargo ship voyages along this route was 23 in 1942, 32 in 1943, 34 in 1944 and 31 after Germany surrendered in 1945. Total westbound tonnage through the Bering Strait was 452,393 in comparison to 3,964,231 tons of North American wartime goods sent across the Atlantic to Soviet Arctic ports. A large portion of the Arctic route tonnage was fuel for Siberian airfields on the Alaska-Siberia air route. Arctic naval operations of World War II The Arctic Circle defining the "midnight sun" encompasses the Atlantic Ocean from the northern edge of Iceland to the Bering