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–Ukraine border of Poland-Russia, Poland-Lithuania, Poland-Belarus and Poland-Ukraine borders. Poland and Ukraine have confirmed the border on 18 May 1992. It is the longest of Polish eastern borders. The border became much more open compared to the Soviet times, when despite being part of the Eastern Bloc, crossing was very difficult. As the border was opened to mass traffic, the number of people crossing the Polish-Ukrainian border begun raising steadily since 1990, stabilizing around 2000s. Approximately 3 million Ukrainians crossed the border in the 1990s, annually. One of the peak numbers was recorded in 2001, with about 12 million people crossing the