Thailand Unleashes Armed Drones on Cambodia: Border Conflict Escalates with Precision Airstrikes

Thailand has dramatically escalated its military response along the tense Thai-Cambodian frontier, deploying not only its F-16 fighter jets to strike Cambodian military positions, but also unleashing armed drones in precision attacks against enemy assets near the volatile border.

In a significant show of air-ground integration, the Royal Thai Army released combat footage showing domestically-built armed drones dropping M261 and M472 mortar bombs directly onto Cambodian military positions and weapons depots, underscoring the growing role of unmanned aerial systems in Thailand’s evolving doctrine.

According to military sources, the drone-launched mortars achieved high-impact strikes, successfully neutralizing Cambodian forward operating positions and degrading artillery logistics nodes positioned dangerously close to Thai territory.

“These Thai-made armed drones were able to identify and strike several high-value enemy targets, including weapons storage depots, rocket artillery staging areas, and mobile rocket launch vehicles, notably a fully loaded RM-70 GRAD system that was reportedly minutes from launch,” a senior Thai defence official confirmed under anonymity.

One of the most notable drone operations reportedly destroyed a key Cambodian arms depot believed to house dozens of 122mm artillery rockets and auxiliary launch systems, significantly reducing the enemy’s firepower along the disputed frontier.

The successful targeting and elimination of a “live and loaded” RM-70 GRAD system further validated Thailand’s investment in precision drone warfare, highlighting both the accuracy and operational effectiveness of its indigenous unmanned aerial capabilities.

The use of drones complemented Thailand’s earlier deployment of six F-16 fighter jets to the region, one of which carried out a precision strike on a Cambodian military target after intense artillery exchanges had already resulted in the deaths of at least 11 civilians.

The fighting, which erupted early Thursday morning, saw exchanges escalate rapidly from small arms fire to sustained artillery barrages across at least six different points along a 209-kilometre stretch of contested borderland.

Cambodian media, quoting military sources, claimed that their forces had launched a coordinated night-time artillery strike using Czech-manufactured RM-70 GRAD multiple rocket launchers, targeting Royal Thai Army tactical positions near the frontier.

Regional intelligence reports indicated that the Cambodian rocket launchers were equipped with 9M22U or SHE-40 artillery rockets—unguided 122mm munitions with an effective range of up to 20 kilometers.

Each 9M22U/SHE-40 rocket carries an 18.4-kilogram high-explosive warhead designed for wide-area suppression, making them particularly lethal against entrenched infantry, logistics hubs, and lightly armoured vehicles—raising concerns about indiscriminate use near civilian populations.

Military analysts believe Cambodia’s use of the Cold War-era RM-70 GRAD system is a signal of heightened combat readiness and a willingness to resort to heavy artillery to defend—or reclaim—territory in the long-disputed frontier.

The RM-70 GRAD, a Czechoslovak variant of the Soviet BM-21, boasts 40 launch tubes for 122mm rockets and can unleash its full payload in under 30 seconds, making it a feared area-denial weapon in conventional warfare scenarios.

Thailand’s aerial counterstrikes, particularly via unmanned systems, indicate a shift in doctrine toward embracing modern precision warfare—focusing on minimizing ground casualties while achieving rapid battlefield dominance.

The deployment of armed drones also reflects Thailand’s sustained investment in unmanned combat systems, aligning with global trends in drone warfare observed in recent conflicts across Ukraine, Gaza, and the South Caucasus.

While Thailand’s Ministry of Defence has yet to issue an official briefing on the full scope of its drone operations, senior sources emphasized the necessity of such strikes to protect national sovereignty and ensure the security of Thai forces stationed along the border.

According to Thai authorities, at least 12 people—mostly civilians—have been confirmed killed in the cross-border hostilities, including an eight-year-old child, making it one of the bloodiest single-day flare-ups in Thai-Cambodian relations in over a decade.

The Ministry of Education has ordered the temporary closure of 582 schools across Thailand’s Surin, Sisaket, and Buriram provinces after multiple Cambodian artillery rockets reportedly landed near residential areas.

Some schools outside the immediate danger zones have been converted into temporary shelters for displaced civilians, while local officials scramble to coordinate humanitarian support.

“I call on all schools along the border to develop comprehensive emergency response plans, including constructing fortified safe zones and establishing temporary shelters for students,” a regional Thai education official urged in a televised statement.

The current crisis follows a series of provocations and tit-for-tat escalations that began with a brief skirmish in late May, during which a Cambodian soldier was killed—an incident that pushed both militaries into heightened alert mode and led to the reinforcement of troops on both sides.

Tensions peaked on Wednesday when Thailand recalled its ambassador from Phnom Penh and expelled Cambodia’s envoy from Bangkok after a second Thai soldier lost a limb to what Thailand alleges was a recently planted landmine by Cambodian troops.

Phnom Penh vehemently rejected the accusation, dismissing it as groundless and politically motivated.

In response to the mounting casualties and territorial violations, the Royal Thai Air Force scrambled six F-16s to the conflict zone in an unusually aggressive posture, confirming that at least one had been deployed in a live strike mission against Cambodian military positions.

According to the Thai military, the use of air power was “measured and precise,” aimed solely at neutralizing immediate threats without risking civilian lives.

Cambodia’s Ministry of Foreign Affairs, however, condemned the airstrike as a “reckless and brutal act of military aggression,” warning that further escalations would be met with proportionate retaliation.

The incident marks the most serious armed confrontation between the two Southeast Asian neighbours since the 2008 and 2011 clashes near the Preah Vihear temple—long a flashpoint of territorial disputes rooted in colonial-era maps and unresolved border demarcations.

Both countries have long claimed sections of the border as their own, particularly areas near elevated terrain and historical landmarks such as Preah Vihear, a UNESCO World Heritage site surrounded by militarized zones.

Analysts fear that the current round of hostilities—occurring amid a fragile Thai coalition government and strained ASEAN diplomacy—could spiral into a broader regional security crisis if not urgently de-escalated.

So far, neither Bangkok nor Phnom Penh has released detailed figures on battlefield losses, but satellite imagery and regional media confirm the destruction of several forward operating bases and supply depots on both sides.

Thailand’s Defence Ministry is reportedly weighing the deployment of additional combat aircraft and air defence units to the border, signaling its preparedness for sustained cross-border engagements should diplomacy fail.

Unconfirmed reports suggest that Cambodia has repositioned multiple rocket artillery units and infantry brigades toward the frontlines, including the deployment of additional RM-70 GRAD batteries near Preah Vihear.

Preah Vihear remains a geopolitical tinderbox—a symbol of unresolved post-colonial grievances and nationalistic fervour that has repeatedly drawn the two militaries into confrontation.

With no immediate signs of de-escalation and both sides reinforcing their positions, the situation continues to evolve into a full-blown military standoff, leaving ASEAN’s credibility in conflict mediation hanging in the balance.