Geography of Latvia which Latvia contested after the dissolution of the Soviet Union. Latvia encompasses 64,589 square kilometers and is an extension of the East European Plain. Its flat terrain differs little from that of its surrounding neighbors. Latvia's only distinct border is the Baltic Sea coast, which extends for 531 kilometers. Its neighbors include Lithuania on the south (453 kilometers of common border), Estonia on the north (267 kilometers), Russia on the east (217 kilometers), and Belarus on the southeast (141 kilometers). Prior to World War II, Latvia bordered eastern Poland, but as a result of boundary changes by the Soviet Union,
Poland–Russia border of the People's Republic of Poland and the Soviet Union, including the Border Agreement between Poland and the USSR of 16 August 1945. While the actual border line remained unchanged following the fall of the Soviet Union, the breakdown of the Soviet Union into a number of post-Soviet states transformed the Poland-Soviet Union border into a Poland-Russia, Poland-Lithuania, Poland-Belarus and Poland-Ukraine border. The Poland–Russia borders were confirmed in a Polish-Russian treaty of 1992 (ratified in 1993). The Poland–Russia border is that between Poland and the Kaliningrad oblast of Russia, which is an exclave, unconnected to the rest of Russia. The