Brunei is a sovereign state in Southeast Asia.
Brunei ( [ bruːˈnaɪ ] , ) , officially the Nation of Brunei , the Abode of Peace ( Negara Brunei Darussalam , Jawi : ) , is a sovereign state located on the north coast of the island of Borneo in Southeast Asia . Brunei has the second-highest Human Development Index among the Southeast Asian nations , after Singapore , and is classified as a `` developed country '' .