Heavy clashes between Thailand and Cambodia have flared anew along their longstanding contested border, marking one of the most intense outbreaks of violence in the recent history of the territorial dispute.

Renewed hostilities, involving artillery exchanges, airstrikes and rocket fire, have erupted despite earlier ceasefire accords, driving tens of thousands of civilians from their homes and prompting urgent calls for restraint from neighbouring states.

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The latest escalation began after a skirmish wounded Thai soldiers in early December, breaking the ceasefire that was brokered in October under international mediation, including by Malaysia, China and with U.S. diplomatic support aimed at stabilising the frontier.

Thailand has launched aerial strikes against Cambodian military positions along the border, asserting it is responding to Cambodian military deployments and assaults, while Cambodian authorities have accused Thai forces of violating international law and encroaching on sovereign territory.

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The clashes have unfolded across multiple points of the roughly 817-kilometre boundary, including areas around temples and rugged frontier terrain that are emblematic of the deeper territorial dispute rooted in colonial-era boundary demarcations.

The conflict has exacted a heavy toll: dozens of combatants and civilians have been killed and injured, and large numbers of residents have taken shelter in evacuation centres as combat operations disrupt daily life and undermine local economies.

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These renewed hostilities come amid wider instability in Thailand, where political upheaval and early elections have coincided with the widening conflict.

Previous attempts to uphold a peace agreement, including a brief seven-day truce in July and diplomatic accords reached in October, foundered when fresh incidents, including alleged landmine explosions and mutual accusations of ceasefire violations, reignited mistrust between the neighbouring states.

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Regional leaders and foreign governments have urged both parties to exercise restraint and return to dialogue.

With displacement figures rising and civilian suffering mounting, the international community’s focus is on preventing further escalation and reaffirming mechanisms aimed at conflict resolution.

The prospect of sustained peace remains uncertain as Thailand and Cambodia navigate entrenched territorial claims and national sensitivities, and as diplomatic efforts seek to rebuild confidence and restore meaningful negotiations.