Thailand has called on Cambodia to demonstrate “genuine sincerity” and verifiable cooperation following an earlier grenade attack near the Thai-Cambodian border in Si Sa Ket province. The Thai Ministry of Foreign Affairs issued a statement on Wednesday 11 March, again condemning the incident and warning that joint border survey activities cannot resume until security is guaranteed. The attack has heightened tensions and raised concerns over the safety of personnel working along the disputed frontier.
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According to Bangkok, Cambodian forces fired a 40-mm grenade round into Thai territory near the Phlan Hin Paet Kon area in Kantharalak District on 24 February 2026. Thailand described the action as a “clear violation” of the Joint Statement signed on 27 December 2025, which required both sides to implement an immediate ceasefire and avoid provocative behaviour. The government said the attack represents a serious breach of the agreement and a threat to stability along the border.
Thai officials also accused Cambodia of engaging in a “repeated pattern of intentionally provocative conduct”. The Ministry cited several alleged encroachments, including the construction of a community market and the Ta Om Equestrian Monument on what Thailand claims is its side of the watershed at the An Ses-An Mah entry point. Another example raised was the building of an administrative facility inside Thai sovereign territory in Ta Phraya District, Sa Kaeo Province.
Bangkok said these actions violate the Memorandum of Understanding on the Survey and Demarcation of Land Boundary (MOU 2000), particularly Article V, which outlines the obligations of both countries in managing border demarcation. Thailand stated it has lodged multiple formal protests since 2010 but claims the Cambodian side has failed to respond or address the concerns raised. Officials stressed that Thailand’s recent stabilisation measures along the frontier are defensive and aimed solely at preventing further casualties.
The Ministry reaffirmed that Thailand remains committed to the MOU 2000 as the sole framework for resolving land boundary disputes. However, it warned that technical survey and demarcation work cannot proceed while tensions remain and the security of the Joint Survey Team cannot be assured. Authorities said the current environment along the border poses an unacceptable risk to personnel involved in the process.
The Nation reported thatCambodia has proposed convening a meeting of the Joint Boundary Commission (JBC) to address the dispute. Thailand acknowledged the proposal but said a formal response would only be issued after the formation of the country’s new Cabinet. Until then, Bangkok is urging Phnom Penh to move beyond “verbal assurances” and introduce verifiable measures to restore stability and protect border officials.
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Adapted by ASEAN Now Nation 12 Mar 2026