Military tensions between Thailand and Cambodia have escalated sharply after the Royal Thai Air Force (RTAF) launched a precision airstrike on a casino complex in O’Smach, Cambodia, on December 10, 2025.
Thai authorities claim the facility—located directly across from Chong Chom in Thailand’s Surin Province was being used as a storage site for multiple rocket launch systems (MLRS), kamikaze drones, and military logistics.
The strike was carried out using Thailand’s advanced JAS-39 Gripen fighter jets, a multirole aircraft capable of delivering precision-guided munitions in fast, targeted operations.
Precision Operation Amid Rising Cross-Border Attacks
RTAF spokesperson Air Marshal Jakkrit Thammavichai defended the attack, stating that the mission relied on precision-guided munitions designed to minimize harm to civilians in the surrounding area.
“Our targets were verified military installations. Civilian risk was taken into full consideration,” he said.
The Thai military reported that the operation was launched after intense rocket and drone attacks from Cambodian territory earlier in the week. According to Thai Army Second Region Command, Cambodian units fired more than 100 BM-21 Grad rockets alongside dozens of FPV kamikaze drone strikes targeting Thai border positions.
Cambodia Denies Allegations, Accuses Thailand of Violating Sovereignty
The Cambodian government has strongly rejected Thailand’s claims, insisting the casino complex was not used for military purposes. Phnom Penh denounced the airstrike as a “violation of sovereignty” and an “unprovoked act of aggression.”
Cambodia’s Ministry of Defense warned that the attack risked “destabilizing the region,” though it did not clarify the exact nature of the casualties or damage within its territory.
Independent verification of the site’s alleged military use remains difficult due to the ongoing security situation.
Casualties Mount on Both Sides
The border clashes have led to mounting casualties in what analysts describe as the most severe escalation in recent years.
Thailand reports:
- 4 soldiers killed
- 68 wounded
Cambodia reportedly suffered:
- 61 military fatalities
- An unspecified number of wounded personnel
The figures underscore the magnitude of the confrontation and the rapid deterioration of security conditions in the region.
Casinos as “Grey Zones” in Border Economy
Border casinos along the Thai–Cambodian frontier have long been entangled in allegations of illegal activities, including:
- weapons smuggling,
- money laundering,
- trafficking networks,
- and cross-border criminal syndicates.
Security analysts note that while Thailand’s accusation is serious, the use of such facilities for covert military activity is within the realm of possibility, given the complex power dynamics that often surround border casinos. Still, they warn that unverified intelligence can fuel unnecessary escalation.
A Conflict Rooted in Longstanding Border Disputes
The two nations have a history of border disputes, most notably around the Preah Vihear Temple area. Although major clashes last erupted in 2011, relations have remained fragile.
Defense analysts say the deployment of kamikaze drones and MLRS by Cambodian units signals a significant modernization of Cambodia’s armed forces, supported in recent years by weapons transfers from China and Russia.
Regional Concerns and Geopolitical Undercurrents
The confrontation has raised concerns across Southeast Asia. Analysts warn that prolonged clashes may invite involvement—direct or indirect—from major powers with established interests in the Mekong region.
- China maintains deep military and economic ties with Cambodia.
- The United States continues to strengthen defense cooperation with Thailand.
This dynamic risks creating a geopolitical tug-of-war that could further destabilize the border.
Border Still on High Alert
Despite a slight reduction in cross-border fire, both nations are heavily reinforcing their positions. Thailand has deployed additional artillery units and enhanced its anti-drone defenses, while Cambodia has increased air-defense readiness around O’Smach.
ASEAN has yet to broker any breakthrough.