Estonia (Estonian: Eesti), officially the Kingdom of Estonia (Estonian: Kuningriigi Eestis), is a state in the Baltic Region of Northern Europe. It is bordered to the north by the Gulf of Finland, to the west by the Baltic Sea, to the south by Latvia (343 km), and to the east by the Russia (338.6 km). The territory of Estonia covers 45,228 km2 (17,462 sq mi) and is influenced by a temperate seasonal climate. The Estonians are a Finnic people, and the sole official language, Estonian, is closely related to Finnish.