evidence: Formerly known as Dutch Guiana, Suriname was a plantation colony of the Netherlands that gained its independence on November 25, 1975. From 1980 to 1987 the country was governed by a succession of military regimes. A new civilian constitution was approved in 1987. Another military coup took place in 1990, but the country returned to civilian rule the following year. The capital, Paramaribo, lies 9 miles (15 km) from the Atlantic Ocean on the Suriname River. Suriname is bordered by the Atlantic Ocean to the north, by French Guiana to the east, by Brazil to the south, and by Guyana to the west. Suriname is involved in territorial disputes with both Guyana and French Guiana that are legacies of colonial rule. The dispute with Guyana centres on the New River Triangle, a 6,000-square-mile (15,600-square-km) area between two tributaries of the Courantyne River in southern Guyana. In addition to claiming the New River Triangle, Suriname also contests its border with Guyana along the Courantyne: Suriname claims sovereignty over the entire river and thus views its west bank as the border, while Guyana claims that the thalweg, or deepest channel of the river, is the boundary. In 2007 a United Nations international tribunal settled another long-standing boundary dispute between the two countries, in which Suriname was awarded one-third of a disputed area of the Caribbean Sea. The area in contention with French Guiana is the 5,000-square-mile (13,000-square-km) region between the Itany and Marouini rivers in the southwestern corner of French Guiana.