Territory, Treaty, and Tribunal: Understanding the Sabah Arbitration Controversy

Sabah Arbitration Case: Key Dates, Rulings, and Historical Context

The long-standing dispute over Sabah (formerly North Borneo) resurfaced on the international stage following a multibillion-dollar arbitration award in favor of the heirs of the Sultanate of Sulu.

On February 28, 2022, a Paris-based sole arbitrator issued a ruling ordering the Government of Malaysia to pay US$14.92 billion to the heirs of the late Jamalul Kiram III, citing Malaysia’s alleged failure to continue annual payments under an 1878 agreement between the Sultanate of Sulu and representatives of the British North Borneo Company. The agreement, signed on January 22, 1878, has long been at the center of differing interpretations—whether it constituted a lease or a permanent cession of territory.

The legal action was pursued by descendants of the Sulu Sultanate, whose current recognized claimant is Muedzul-Lail Tan Kiram. The heirs argued that Malaysia stopped making the annual cession payments in 2013 following security tensions in Sabah. Historically, Malaysia had continued symbolic yearly payments—amounting to approximately 5,300 Malaysian ringgit—long after Sabah joined the Malaysian Federation in 1963.

However, the arbitration award faced swift legal opposition. In July 2023, the Paris Court of Appeal annulled the US$14.92 billion award, ruling that the arbitrator lacked proper jurisdiction. Malaysia consistently maintained that the arbitration proceedings were invalid and that Sabah is an integral part of its sovereign territory under international law.

Philippine Government Position and Historical Milestones

The Philippines formally asserted its claim over Sabah during the administration of President Diosdado Macapagal in 1962, when Manila officially notified the United Kingdom of its position that North Borneo historically belonged to the Sultanate of Sulu and, by succession, to the Republic of the Philippines. The claim was later referenced in Memorandum Order No. 427, issued on July 16, 1974, which reiterated the country’s stance.

Sabah became part of Malaysia on September 16, 1963, following the formation of the Federation of Malaysia—a development recognized by the United Nations after consultations and fact-finding missions at the time.

Public Discourse and Regional Implications

The 2022 arbitration ruling sparked renewed public interest and debate in both the Philippines and Malaysia. For some Filipinos—particularly those with historical ties to the Sultanate of Sulu—the award was viewed as symbolic recognition of long-standing grievances. Others emphasized that the arbitration case involved private heirs and did not equate to a sovereign territorial ruling between states.

The Department of Foreign Affairs of the Philippines has maintained that while the Philippines has not abandoned its historical claim to Sabah, any resolution must be pursued through peaceful and diplomatic means in accordance with international law.

Despite the annulment of the award, the Sabah issue remains deeply rooted in Southeast Asian history—tracing back to pre-colonial sultanates, Spanish and British colonial administration, and post-war nation-building in the region. The debate underscores the complex intersection of historical agreements, sovereignty, and modern international legal processes.

As of today, Sabah remains under Malaysian administration, but the historical claim and its legal dimensions continue to be discussed in academic, diplomatic, and public spheres.