Cambodia, Thailand to Begin Joint Survey of Disputed Border Section

PHNOM PENH, Cambodia (Nov.22,2025) — Cambodia’s General Secretariat of the Border Affairs Committee said Friday that Cambodia and Thailand have agreed to send a joint survey team to carry out fieldwork along a disputed section of their shared land border in Banteay Meanchey province.

The teams are scheduled to begin work Nov. 18, 2025, in the area between Border Posts 42 and 47, which covers parts of Chork Chey and Prey Chan villages in Ou Beychan commune, Ou Chrov district.

The committee said the work will involve measuring and installing temporary markers as part of a longer-term process toward full demarcation. Officials said the step follows previous agreements, including a 2000 memorandum of understanding, 2003 terms of reference, meeting records of the Joint Boundary Commission and related technical instructions.

Cambodian and Thai teams have conducted joint surveys since 2006 to identify the precise locations of 74 concrete posts installed by the Indochina–Siam Boundary Demarcation Commission in 1919-20. The committee emphasized that past activities in the area between Posts 42 and 47 were limited to locating the original markers and that no formal demarcation has yet taken place.

The border work is being guided by historical documents dating back to the French Protectorate era, including the procès-verbaux of the 1908–09 boundary commission and records of the 1919–20 border post installation.

The committee urged the public to remain confident in the Cambodian Joint Boundary Commission, saying it is committed to protecting the country’s territorial integrity and operating in line with international law and established border principles.