Brunei is a southeast Asian country consisting of two unconnected parts with a total area of 5,765 square kilometres (2,226 sq mi) on the island of Borneo. It has 161 kilometres (100 mi) of coastline next to the South China sea, and it shares a 381 km (237 mi) border with Malaysia. It has 500 square kilometres (193 sq mi) of territorial waters, and a 200-nautical-mile (370 km; 230 mi) exclusive economic zone