Phnom penh: The Head of Mission of the ASEAN Observer Team in Cambodia (AOT-KH), Commodore Glenn Z. Dizon of the Philippines, attended a briefing on July 27 regarding the progress of the Cambodia-Thailand border demarcation and marker placement process.
According to Agence Kampuchea Presse, the briefing was conducted by Mr. Promsoeun Vattanak, Head of the Cambodia-Thailand Joint Survey Team under the Secretariat of State for Border Affairs, and organized by the Cambodia Liaison Group (CLG) in Siem Reap province. The presentation aimed to elucidate Cambodia's commitment to resolving border issues through peaceful means, adhering to international law, existing bilateral mechanisms, relevant conventions, treaties, and agreements, as well as the mandate of the Cambodia-Thailand Joint Boundary Commission (JBC).
In response to inquiries from AOT members about the progress of joint surveys and border demarcation, representatives from the Secretariat of State for Border Affairs clarified that joint surveying and temporary border marker installation by the Joint Survey Teams (JSTs), including activities in Chouk Chey village, Prey Chan village, and between border markers 52 and 59, have been suspended since the special JBC meeting in Chanthaburi on October 22, 2025. The cessation of work followed attacks and encroachments by Thai armed forces along the Cambodia-Thailand border, despite multiple diplomatic protest notes from Cambodia.
The representatives reiterated Cambodia's call for Thailand to send its Joint Survey Team to resume field surveys and temporary border marker installation. They also urged for the early convening of JBC and related technical meetings, in line with Paragraphs 3 and 4 of the Joint Statement from the Third Special Meeting of the Cambodia-Thailand General Border Committee (GBC) dated December 27, 2025, and the minutes from the Special JBC Meeting held in Chanthaburi on October 22, 2025.
As per the agreements, both nations committed to prioritizing the resumption of joint border survey and demarcation work to foster lasting peace along the border and ensure the safe, free, and dignified return of displaced Cambodian civilians.
Cambodia reaffirmed its dedication to safeguarding the Cambodia-Thailand international boundary established by the Franco-Siamese Boundary Commission, based on international law, the principle of uti possidetis juris, the Franco-Siam treaties, border delimitation protocols, official maps, the 2000 Memorandum of Understanding, the 2003 Terms of Reference, and other bilateral agreements.
Additionally, Cambodia reiterated its stance against recognizing any boundary alteration resulting from force or unlawful territorial occupation through a fait accompli and committed to continuing formal protests against any unilateral actions violating Cambodia's territorial integrity.