On the morning of 8 December 2025, the military of Thailand launched airstrikes against positions belonging to Cambodia along their disputed 817-kilometre shared border. The strikes followed clashes earlier at dawn, in which Thailand said one of its soldiers was killed and several were wounded. Reuters+2Al Jazeera+2
Cambodia’s defence ministry denied opening fire and claimed its troops did not retaliate — painting the Thai air raids as an unprovoked escalation. Al Jazeera+1
Human cost and mass displacement
According to Cambodian authorities, at least four civilians were killed and several more wounded in the airstrikes, affecting residential areas in the border provinces of Oddar Meanchey and Preah Vihear. Al Jazeera+1
The violence forced mass evacuations. On the Thai side, more than 385,000 people across four border districts were moved to shelters. Over 1,100 Cambodian families from vulnerable border zones were also evacuated. Reuters+2ABC+2
Back to brink: why the ceasefire collapsed
The renewed fighting shatters a tentative peace that had been brokered earlier in 2025. The two countries had signed a ceasefire agreement in October under regional mediation — but the truce began unraveling after Thailand alleged that Cambodia planted new landmines along the frontier. Reuters+1
Thailand suspended its de-escalation commitments, citing the landmine incident, and accused Cambodia of failing to respect the ceasefire. That set the stage for renewed shelling and the eventual air raids. Reuters+2Wikipedia+2
The use of heavy weapons — including rocket launchers — and the deployment of airpower mark the most serious escalation since the war-like exchanges of July 2025. Wikipedia+2Reuters+2
Regional and diplomatic implications
The border conflict remains rooted in century-old territorial disputes dating to colonial-era maps. Despite past efforts at demarcation and mediation, overlapping claims — especially near heritage sites and contested border zones — have repeatedly led to violence. Reuters+1
The renewed violence threatens regional stability. The humanitarian impact — especially mass civilian displacement — could deepen insecurity in border communities and complicate efforts at diplomatic resolution.
International observers and regional leaders have expressed concern over the breakdown in trust. The escalation undermines recent peace efforts and raises uncertainty about what comes next for Cambodia–Thailand relations
