Full Breakdown
Thailand-Cambodia Maritime Conciliation Begins in Singapore
By Drooid · · How we work
Core Event
On September 15 2026, Thailand’s Foreign Minister Sihasak Phuangketkeow and Cambodia’s Foreign Minister Prak Sokhonn delivered opening statements at the first meeting of a compulsory UNCLOS conciliation commission in the Singapore office of the Permanent Court of Arbitration. The three-day session (September 14-16) seeks a negotiated settlement of overlapping maritime claims in the Gulf of Thailand that cover roughly 26,000 sq km and are estimated to contain 339.8 billion cubic metres of natural gas and oil valued at about US $300 billion.
Background & Context
The dispute dates to 1972 when Cambodia and Thailand each filed continental-shelf claims that intersect near Koh Kood. A 2001 memorandum of understanding (MoU 44) created parallel talks on delimitation and joint development, but only two official meetings occurred over 25 years. On May 5 2026 Thailand’s cabinet terminated the MoU, citing a lack of progress. Cambodia responded on June 2 2026 by invoking compulsory conciliation under Article 298 of UNCLOS. Thailand replied on June 19, agreeing to participate but limiting the scope to maritime delimitation.
Data & Statistics
- Disputed area: ? 26,000 sq km.
- Estimated gas reserves: ? 339.8 billion cubic metres.
- Estimated oil value: ? US $300 billion.
Official Statements & Responses
Both ministers affirmed that dialogue remains open and that the commission’s non-binding recommendations could help “identify common ground” and “narrow divergent legal positions.” Analysts note that compulsory conciliation gives the smaller state a stronger voice and that Singapore’s neutral venue may aid continuity into 2027 (Hunter Marston, Lowy Institute).
Verbatim Quotes
- “Cambodia took this step to find a peaceful pathway forward in accordance with international law. Cambodia sees this conciliation process as a means to rebuild trust, not as a form of escalation,” — Prak Sokhonn, Cambodian Foreign Minister
- “Cambodia suggests that Thailand’s decision to terminate the MOU left it with no option but to initiate these proceedings. This is simply not true,” — Sihasak Phuangketkeow, Thai Foreign Minister
- “The fact that they are sitting together in a legal framework with conciliators that they have consensus on instead of resorting to public displays of retaliation, reaction and unilateralism is a good thing in and of itself,” — William Jones, international politics expert, Mahidol University International College
- “The door for dialogue is open. In the end, the onus still rests on our two countries to find the way forward together, in earnest and in good faith,” — Sihasak Phuangketkeow, Thai Foreign Minister
What’s Next
The commission will set procedural rules and a work calendar during the September 14-16 session and must issue a report with recommendations within 12 months of its constitution. The conclusions will not be legally binding, and subsequent meetings may rotate among PCA offices, with Singapore’s ASEAN chairmanship in 2027 likely influencing further diplomatic engagement.