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,
Finland–Russia border which there is a maritime boundary between the respective territorial waters, terminating in a narrow strip of international waters between Finnish and Estonian territorial waters. The first border treaty concerning this border was signed in Nöteborg in 1323, between Sweden (to which Finland belonged) and the Novgorod Republic. The Treaty of Teusina in 1595 moved the border eastward. In conclusion to the Ingrian War, Sweden gained a large tract of land through the acquisition of the Nöteborg fortress, the Kexholm and its large province, southwest Karelia and the province of Ingria in the Treaty of Stolbovo (1617). The Treaty of