Cambodia Escorts ASEAN Observers to Boundary Pillar No. 27, Reaffirms Uti Possidetis Juris

PHNOM PENH — Oct. 1, 2026: The Cambodian Liaison Group has facilitated a field visit for the ASEAN Observer Team in Cambodia to observe, verify and report on the situation along the Cambodia-Thailand border at Boundary Pillar No. 27.

The visit took place at 10:10 a.m. on Thursday, Oct. 1, 2026, at Thmar Romiel Lech village, Banteay Chhmar commune, Thmor Puok district, Banteay Meanchey province, according to a press release from the Spokeswoman of the Ministry of National Defence.

The mission aimed to give the ASEAN Observer Team a comprehensive and direct understanding of the situation at the agreed boundary pillars between Cambodia and Thailand, and to demonstrate the Royal Government's stance of resolving border issues peacefully through dialogue and bilateral mechanisms, in line with international law, existing bilateral agreements and the mandate of the Joint Boundary Commission.

Cambodia reaffirmed what it described as an unyielding and firm position in safeguarding the international boundary line between Cambodia and Thailand inherited from the Commission of Delimitation of the Boundary between Indo-China and Siam. It cited full respect for international law principles, the principle of the inviolability of frontier (Uti Possidetis Juris), the Franco-Siamese Conventions and Treaties, the Protocol concerning the delimitation of the boundary, the maps produced by the Commissions of Delimitation, the Procès-Verbaux of the meetings and of demarcation, the 2000 MOU, the 2003 TOR and other relevant agreements previously agreed by both parties.

Source: Ministry of National Defence

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Reported by The Khmer Today