A long-simmering border dispute between Thailand and Cambodia flared into deadly violence on Thursday, leaving at least 12 people dead and prompting Thailand to seal key crossings along its eastern frontier.
The outbreak marks one of the most serious escalations in the nations’ territorial standoff in over a decade.
The Thai military confirmed the deaths of nine civilians on its side, with casualties recorded across three provinces: six in Sisaket, two in Surin, and one in Ubon Ratchathani.
At least 14 others were wounded, according to official army reports. Cambodia has not yet released official casualty figures, but unverified reports suggest a comparable number of fatalities on its side of the border.
The clashes erupted near the disputed area surrounding the Preah Vihear temple, an 11th-century Hindu site perched on a cliff along the Thai-Cambodian border.
The temple, designated a UNESCO World Heritage Site, has been at the heart of decades of nationalistic and legal battles between the two neighbors.
Both sides traded accusations over who fired the first shots. Thai officials blamed Cambodian forces for initiating the hostilities, while Cambodian authorities accused Thailand of escalating the situation with aerial bombardments, including alleged strikes near a road adjacent to the temple. Cambodian officials condemned the air raids as a blatant “act of aggression.”
In response, the Thai government closed multiple border crossings, citing security concerns and the need to prevent further civilian casualties. Border security has been reinforced, with fears of continued flare-ups in the days ahead.
The closures are expected to disrupt daily cross-border trade and movement, affecting thousands of families and businesses in both countries.
The violence has drawn urgent calls for de-escalation. The United Nations and the Association of Southeast Asian Nations (ASEAN) have urged both parties to exercise restraint and resume diplomatic dialogue. Regional analysts warn that, without immediate mediation, the conflict could spiral into prolonged hostilities.
The roots of the dispute trace back to a 1962 International Court of Justice ruling, which affirmed Cambodian sovereignty over the temple.
However, adjacent territories — particularly a 4.6-square-kilometer stretch of land near the site — remain fiercely contested. Periodic clashes have occurred, most notably in 2011, when similar fighting left scores dead and forced thousands to evacuate.
Despite past attempts at demilitarization and joint border commissions, progress has often stalled amid rising nationalist rhetoric in both countries. With tensions now boiling over once again, the spotlight turns to regional diplomacy to avert a broader crisis.
