Malaysia and Brunei are taking significant steps toward resolving their long-standing colonial-era border dispute over the Limbang district. During the 27th Annual Leaders’ Consultation held in Bandar Seri Begawan on August 21, Brunei's Sultan Hassanal Bolkiah and Malaysian Prime Minister Anwar Ibrahim discussed the demarcation of their shared land boundary. Following the meeting, Anwar announced that approximately 50 percent, or 264.791 kilometers, of the Malaysia-Brunei land boundary has now been jointly surveyed and demarcated. The two leaders have set a final target to complete the survey of the entire land boundary by 2034, with a specific focus on resolving the critical Limbang sector by mid-2027.
In a joint communiqué, the leaders reaffirmed their commitment to several binding historical agreements, including the 2009 Exchange of Letters, the March 2012 boundary memorandum, and its associated Terms of Reference. The directive instructs both nations to resolve Sector F-G, which covers the Limbang area, by May 31, 2027. This specific sector is to be demarcated solely through the watershed principle, using a single, jointly determined watershed. According to senior Bruneian journalist Malai Hassan Othman, Sector F-G spans roughly 6.6 kilometers from Bebuloh toward a point west of Bukit Gadong, near Kampong Limau Manis and the Kuala Lurah-Tedungan border crossing. While this sector is geographically connected to the Limbang frontier, it does not represent the entirety of the historical territorial question.
The sovereignty dispute over Limbang has deep historical roots. Originally governed under the Brunei Sultanate, the district provided essential revenue, food, and river access. However, the Limbang Rebellion of 1884 created a major conflict between the Sultanate and local indigenous residents. This unrest culminated in March 1890 when Charles Brooke, the Rajah of Sarawak, annexed Limbang, claiming local chiefs no longer desired the Sultan's rule. The British government gave informal, tacit approval to the annexation despite intense protests from Brunei's Sultan Hashim, who rejected proposed annual financial compensation in exchange for the territory. Although Britain declared the matter closed in 1895, Brunei never formally agreed. This annexation effectively split Brunei into two disconnected parts, isolating its eastern Temburong district from the rest of the country.
The issue remained a point of tension for decades. In 1970, the late Sultan Haji Omar ’Ali Saifuddien, father of the current Sultan, formally reasserted Brunei's sovereignty over Limbang. The most serious modern attempt to settle the issue occurred in 2009, when the Exchange of Letters was signed by Sultan Hassanal Bolkiah and then-Malaysian Prime Minister Abdullah Badawi. That agreement successfully resolved maritime boundaries, territorial seas, continental shelves, and Exclusive Economic Zones (EEZs), and established a Commercial Arrangement Area for joint offshore oil and gas developments, such as the Kikeh blocks. It also recognized Brunei's claim to Louisa Reef and secured transit rights for Malaysian vessels. However, progress on the land border was disrupted when Badawi publicly claimed that Brunei had relinquished its claim to Limbang. This assertion was quickly denied by Brunei's then-Second Minister of Foreign Affairs and Trade Lim Jock Seng, who clarified that negotiations focused on general boundary demarcation rather than the specific transfer of Limbang.
Despite the unresolved official border, Limbang has evolved into a practical bridge between the two nations rather than a source of active conflict. Under ASEAN agreements, Malaysian and Bruneian citizens travel visa-free and can cross the border using their national identity cards. This ease of travel is essential for daily life. Because Limbang separates Temburong from the rest of Brunei, Temburong residents must enter Malaysian territory and cross back into Brunei to reach the capital, Bandar Seri Begawan, for work. Similarly, Limbang residents traveling to Miri, the nearest city in Sarawak, must drive through Brunei before re-entering Malaysia. For young Bruneians, the short drive across the border to Limbang is also a popular route for weekend leisure, demonstrating how local populations have adapted to the unique geography of the lingering border dispute.
