Brunei–Malaysia relations Brunei–Malaysia relations Brunei–Malaysia relations (; Jawi: هوبوڠن بروني–مليسيا) are foreign relations between Brunei and Malaysia. Brunei has a high commission in Kuala Lumpur, as well as consulate-generals in Kota Kinabalu and Kuching. Malaysia maintains a high commission in Bandar Seri Begawan. Both countries are full members of ASEAN and the Commonwealth of Nations. The two countries share a land border on the island of Borneo. Relations between the two countries has been established since January 1984. Brunei and Malaysia have many similarities in culture especially in the East Malaysian areas as they were once a part of the Bruneian Empire.
Indonesia–Malaysia border the area. The dispute started with Malaysia issuing a map in 1979 of its territorial sea and continental shelf which included the Ambalat block. The map drew Malaysia's maritime boundary in a southeast direction into the Celebes Sea after it leaves the eastmost point on land on Sebatik island. This would include the Ambalat block, or a large part of it, within the Malaysian continental shelf. Indonesia has, like the other neighbours of Malaysia, objected to the map. Indonesia has never officially announced the exact locations of its maritime boundaries but claimed during its arguments in the Sipadan Case that