The guns along the Thai-Cambodia border have been quiet since December 2025, when a special ASEAN foreign ministers' meeting in Kuala Lumpur pressed both sides into a de-escalation agreement. But quiet is not the same as resolved. The conditions that produced last year's worst clashes in more than a decade — disputed territory, landmine incidents, and deeply entrenched mutual distrust — remain fully intact.
The conflict came to a head in mid-2025 after a series of landmine explosions injured and killed Thai soldiers patrolling a disputed stretch of border near Surin and Sisaket provinces. Thailand accused Cambodia of laying fresh mines — specifically Russian-made PMN-2 type anti-personnel devices not stockpiled by the Thai military. Cambodia denied the allegation, arguing the mines were legacy contamination from the country's decades of civil war, and that Thai soldiers had strayed from agreed patrol routes. Neither side persuaded the other, and by late July artillery exchanges and airstrikes had killed at least 43 people and displaced more than 300,000 on both sides.
A ceasefire brokered in late July held briefly before collapsing again in November, when another landmine incident injured four Thai soldiers. Thailand suspended the peace accord. Sporadic clashes resumed, and Bangkok expanded its airstrikes inside Cambodian territory before Kuala Lumpur again stepped in as a mediator. The December agreement has so far held, but both countries continue to accuse the other of failing to honour ceasefire terms.
The Thai government this week released video it claims disproves Cambodia's denial of planting mines in the Chong Bok area — a move that signals Bangkok has no intention of letting the issue fade quietly into diplomatic ambiguity. Cambodia's government called Thailand's claims a lie. The exchange is a reminder of how little trust exists between the two governments at any level.
ASEAN's ability to manage the dispute has been limited by design and by distraction. The Philippines, which holds the 2026 ASEAN chairmanship, has its attention fixed on the South China Sea and Code of Conduct negotiations with China. There is little appetite in Manila to absorb political capital on a bilateral land dispute. The United States and China have both urged de-escalation, but neither has applied the kind of sustained pressure that would force a structural resolution.
What observers should watch is whether the current ceasefire produces any durable mechanism for managing the landmine dispute — independent monitoring, joint clearance operations, or agreed verification procedures. Without something concrete, the pattern of the last twelve months is likely to repeat: a fragile calm, a new incident, mutual accusations, and another crisis that the region scrambles to contain rather than prevent.
