PHNOM PENH, Cambodia — 17 May 2026, A joint delegation of Cambodian officials and ASEAN observers carried out a monitoring mission along a contested section of the Thailand-Cambodia border on Sunday, according to a statement released by Cambodia’s Ministry of National Defense.
Lt. Gen. Maly Socheata, Spokeswoman of the Ministry of National Defense of the Kingdom of Cambodia, said the Cambodian Liaison Group (CLG) coordinated the site visit with the ASEAN Observer Team, led by the Philippines as the Head of Mission (HOM AOT), at 09:00 on Sunday. The delegation inspected the border area at Seila Khmer Village, located in the O Bei Chon Commune, O Chrov District, Banteay Meanchey Province.

Phnom Penh maintains that the area has been continuously cultivated and administered by Cambodian citizens since an emergency ceasefire with Thailand took effect at 12:00 on 27 December 2025. The observers aimed to verify the border situation and evaluate compliance with stabilization measures outlined in the joint ceasefire agreement, which followed a period of heightened tensions between the neighboring nations last year.
In the press release, Cambodia strongly reiterated that formal survey and demarcation work remains the exclusive mandate of the bilateral Joint Boundary Commission (JBC) and its subsequent Joint Survey Teams (JSTs). All types of armed forces, including the military, and local authorities shall not have the authority to indicate the boundary line on the terrain.
The defense ministry explicitly rejected any unilateral alterations to the international boundary line, insisting that all border determinations must strictly adhere to historical framework agreements. These include the Franco–Siamese conventions, the Agreed Minutes of the JBC, the Memorandum of Understanding (MOU) 2000, and the Terms of Reference (TOR) 2003.
Cambodian authorities firmly rejected any border changes resulting from the historical or present use of force. Phnom Penh urged Bangkok to dispatch its survey teams back to the field to resume demarcation work and called for an immediate meeting of the JBC.
The ministry reaffirmed its commitment to the Joint Declaration on the Peace Agreement between Cambodia and Thailand on 26 October 2025, as well as the resolutions passed during the Third Special Meeting of the Cambodia–Thailand General Border Committee (GBC) on 27 December 2025, aimed at restoring long-lasting peace and stability along the frontier.





























































