Thailand and Cambodia's 2025 Border Clashes Leave Dozens Dead and Shake Thai Politics

A ceasefire after five days of fighting

At least 43 people were killed and more than 300,000 displaced when fighting between Thailand and Cambodia spread along their border from July 24 to 28, 2025. Most of those killed were civilians. Artillery, rockets and air strikes turned a territorial dispute around ancient temples into Southeast Asia's most dangerous border flare-up in more than a decade.

A ceasefire agreed on July 28 in Kuala Lumpur stopped the main fighting, but by August 9 the border remained tense. Troops were still deployed, sporadic violence and new landmine incidents threatened the truce, and tens of thousands of displaced people remained unable or unwilling to return home.

The crisis reached far beyond the villages under fire. Thailand's prime minister, Paetongtarn Shinawatra, was suspended after a leaked conversation with Cambodia's former leader Hun Sen. Border restrictions damaged trade, tourism businesses lost bookings, and regional diplomacy struggled to contain a conflict rooted in competing territorial claims and nationalist politics.

Malaysia, chairing the Association of Southeast Asian Nations (ASEAN), helped negotiate the ceasefire with support from China and the United States. Cambodia also appealed to the United Nations Security Council. The immediate task was to stop the shooting; the larger dispute over territory and how to settle it remained unresolved.

How a May skirmish became a July crisis

A clash in late May near Preah Vihear Temple left a Cambodian soldier dead. The ancient temple, a UNESCO World Heritage site overlooking a disputed escarpment, had long been a focus of rivalry. Both countries blamed the other for the violence.

Cambodia subsequently banned Thai goods, Thailand closed border crossings, and diplomatic relations deteriorated. Those measures brought the dispute into everyday life even before the heaviest fighting began, affecting people who depended on movement and commerce across the frontier.

On July 23, a Thai patrol in Ubon Ratchathani province triggered a landmine, injuring five soldiers. Thailand accused Cambodia of planting new mines. Cambodia said the explosives were remnants of earlier conflicts. The competing explanations added another source of tension to an already dangerous situation.

The next day, fighting broke out near Ta Muen Thom Temple and spread to at least a dozen locations along the border, which stretches about 800 kilometers. Both countries accused the other of provocations, while the use of heavy weapons rapidly increased the danger to nearby communities.

The escalation, hour by hour

July 24 brought a rapid expansion from confrontations near a temple to fighting across several border areas. Accounts from the two countries and international observers described the following sequence:

• Late May: A skirmish near Preah Vihear Temple killed a Cambodian soldier and triggered a worsening diplomatic confrontation.
• July 23: A landmine injured five Thai soldiers in Ubon Ratchathani, prompting conflicting explanations about when the mine had been laid.
• Early morning, July 24: Both sides accused each other of drone incursions and provocations near Ta Muen Thom Temple.
• 8:20 a.m.: Cambodian forces reportedly opened fire, and Thailand responded.
• By 10:30 a.m.: Fighting had broken out in at least six locations, with artillery, rockets and other heavy weapons in use.
• Later that morning: Thai F-16 jets bombed Cambodian military targets, while Cambodia fired BM-21 rockets into Thai territory, striking civilian areas.
• By midday: Thai authorities had closed all border checkpoints, and both countries recalled their ambassadors.
• July 28: A ceasefire was agreed in Kuala Lumpur after five days of fighting.

The widening battlefield made the crisis harder to contain. Fighting around a disputed site could quickly expose communities elsewhere along the frontier to bombardment, evacuation orders and the closure of routes used for work and trade.

Why the temples and surrounding land matter

Preah Vihear and Ta Muen Thom were built by the Khmer Empire between the ninth and 12th centuries. Their historical and cultural importance has made them powerful symbols in a dispute shaped by centuries of rivalry and borders drawn during the colonial period.

France, which colonized Cambodia in the 19th century, forced Siam, now Thailand, to surrender territory. The 1907 Franco-Siamese treaty returned Preah Vihear to Cambodia but left the status of surrounding land ambiguous. The temple and the territory around it consequently became connected but distinct parts of the dispute.

After Cambodia became independent in 1953, Thailand reoccupied the temple. Cambodia took the case to the International Court of Justice (ICJ), the international court asked to settle the sovereignty dispute. In 1962, the court ruled that the temple belonged to Cambodia, but the border around it remained unclear.

That unresolved geography helped fuel repeated confrontations, including fighting from 2008 to 2011 and the renewed violence in 2025. For people living nearby, the disagreement over a boundary has repeatedly meant soldiers, restricted movement and the risk of losing their homes.

Nationalist feeling runs strongly on both sides. Cambodians accuse Thais of appropriating Khmer culture and territory, while Thais argue that historical conquests support claims to certain border areas. These competing versions of history give the temple disputes a significance that extends beyond the land itself.

Cambodia's registration of Preah Vihear as a UNESCO World Heritage site in 2008 reignited tensions. Thailand protested, and the two countries exchanged fire in the years that followed. A designation celebrating cultural heritage became another point of confrontation between the neighbors.

Civilians flee homes, schools and hospitals

Artillery and rocket attacks struck hospitals, schools, gas stations and homes during the July fighting. Entire villages emptied as residents tried to escape. In Thailand's Surin and Sisaket provinces, at least 13 civilians and one soldier were killed in a single day, and dozens more people were wounded.

Cambodian authorities described similar devastation, although official casualty figures were not immediately released. Across both countries, the fighting killed at least 43 people, most of them civilians, and displaced more than 300,000.

Families sought shelter in makeshift camps, pagodas and schools away from the border. Many lost both their homes and the means to earn a living. Even after the ceasefire, continuing troop deployments and fear of another outbreak kept tens of thousands from returning.

Phian Somsri, a resident of Ubon Ratchathani, described fleeing while artillery and rockets struck. Her concerns extended from her own family to those fighting along the border:

I am so concerned that the bomb drop and the bullet will kill us. I am worried for my people, my children, my relatives and especially for the troops who fight.

A leaked call deepens Thailand's political crisis

Paetongtarn Shinawatra, Thailand's prime minister and the daughter of influential former leader Thaksin Shinawatra, faced a political crisis after the leak of a phone conversation with Hun Sen, Cambodia's former prime minister and current Senate president.

In the conversation, Paetongtarn appeared to criticize her own army's actions and offered to "take care of" Hun Sen's requests. The remarks fueled accusations of disloyalty and claims that she had undermined Thailand's powerful military at a moment of confrontation with Cambodia.

The Constitutional Court suspended Paetongtarn, and a key coalition partner withdrew from her government. Acting Prime Minister Phumtham Wechayachai, a loyalist from the Pheu Thai party, struggled to maintain order as nationalist rhetoric intensified and opposition parties pushed for a motion of no confidence.

A motion of no confidence is a parliamentary attempt to challenge a government's authority to remain in office. In this crisis, the push for one added to pressure already coming from the court case, the loss of coalition support and tensions with the military.

Tita Sanglee, an associate fellow at the ISEAS–Yusof Ishak Institute, described the limited room for maneuver facing Paetongtarn's party:

Her party, Pheu Thai, is in a very fragile situation right now. They don't have much option but to go along with what the military wants,

The confrontation exposed deep divisions in Thailand's ruling coalition and raised fears of another military coup, a recurring feature of the country's politics. The border emergency and the struggle over civilian political authority were unfolding together.

Thaksin, recently returned from exile, also faced renewed charges involving insults to the monarchy and manipulation of his daughter's administration. Analysts suggested that royal protection for the Shinawatra family might have been withdrawn, leaving them more exposed to political rivals.

Malaysia helps negotiate a halt to the fighting

Cambodia appealed to the United Nations Security Council, describing the violence as a grave threat to regional peace. Council members held an urgent private meeting and urged restraint and dialogue.

Malaysia, serving as ASEAN chair, helped broker the July 28 ceasefire in Kuala Lumpur with support from China and the United States. The agreement froze troop deployments along the border and called for the immediate release of captured soldiers.

Both countries also pledged to stop attacks on civilians and civilian infrastructure. For evacuated families, those commitments offered the prospect of returning to homes, schools and workplaces without facing renewed bombardment.

The truce nevertheless remained fragile. Sporadic clashes, landmine incidents and accusations of violations continued in the weeks after the agreement. Troops stayed near the border, keeping security concerns at the center of decisions about whether residents could return.

The ceasefire addressed the fighting, while the territorial dispute still required a settlement. Thailand rejected Cambodia's appeal to the ICJ for a final border ruling and insisted on negotiations between the two countries. Their disagreement therefore extended to the process they should use to resolve the boundary.

Why mediation faces political limits

ASEAN's policy of non-interference limits its ability to enforce peace between members. Malaysia could help bring the two governments into negotiations, but the regional organization had limited power to compel lasting compliance.

China had influence over both countries, yet it was seen as more closely aligned with Cambodia. That relationship raised concerns in Bangkok and among neighboring states wary of Beijing's regional ambitions, complicating the politics around outside mediation.

Domestic pressures also shaped the confrontation. Both governments used the crisis to rally nationalist support and divert attention from internal challenges. Cambodia's leadership, headed by Prime Minister Hun Manet alongside the influence of his father, Hun Sen, invoked the dispute to strengthen its legitimacy amid economic difficulties and a lack of opposition.

In Thailand, military and conservative factions used the conflict to weaken the Shinawatra family and reassert their influence. Pressure on civilian leaders made decisions about the border part of a broader contest over political power.

The combination of territorial claims, national pride and domestic rivalry made compromise difficult. Decisions about disputed land carried consequences for leaders seeking to demonstrate loyalty to their country, as well as for communities seeking an end to the fighting.

Tourism and trade absorb the economic damage

Thailand's tourism sector was losing nearly $92 million a month, with more than 5,000 hotel rooms cancelled and major attractions closed. Group travel bookings collapsed, removing income from businesses already dealing with the disruption caused by the clashes.

Hotels that remained open were accommodating aid workers and journalists instead of tourists. The change showed how the border emergency had altered local economic activity: rooms were still needed, but ordinary leisure travel had been displaced by the response to the conflict.

Border trade slowed sharply as checkpoints closed or operated under strict controls. Cambodia banned imports of Thai fruit and vegetables, while Thailand restricted internet and power links to Cambodia.

Farmers, traders and local businesses on both sides suffered heavy losses. A closed crossing could separate sellers from customers and interrupt the movement of goods, while displacement kept residents away from their usual work. Many families faced the combined loss of shelter and income.

The costs reached beyond damaged buildings. Cancelled travel, restricted supplies and interrupted commerce left affected provinces with fewer ways to earn money at the same time that households needed resources to recover.

Aid efforts and the difficult return home

Governments and aid organizations worked to provide shelter, food and medical care for displaced people. Schools, pagodas and temporary camps became places of refuge for families who had left villages exposed to artillery and rocket fire.

In Surin province, Acting Prime Minister Phumtham Wechayachai visited evacuation centers and promised increased compensation for damaged homes. Local authorities began assessing damage and preparing for evacuees to return gradually.

Many residents remained hesitant because of security concerns. Troops were still deployed, landmine incidents continued, and accusations of ceasefire violations sustained fears that another confrontation could force families to flee again.

The immediate recovery depended on more than repairing houses. Families needed safety to reach their homes, functioning services and a way to resume work. The loss of livelihoods made prolonged displacement especially difficult for people already facing damage to their property.

Shared heritage remains at the center of rivalry

Preah Vihear and Ta Muen Thom could represent a shared historical inheritance, yet both had become flashpoints for resentment. Colonial border arrangements, nationalist accounts of the past and unresolved territorial claims continued to shape the choices of the two governments.

Repeated international court rulings and mediation efforts had not removed the ambiguity surrounding the border or the political force of nationalist narratives. The July ceasefire reduced the immediate fighting while leaving those pressures in place.

Firstpost's commentary on Preah Vihear described the tension between the temple's cultural connections and its role in the dispute:

The tragedy of Preah Vihear is that both Thailand and Cambodia have chosen to emphasise what is disputed about the Hindu temple's history rather than its potential as a connection between the two Buddhist neighbours.

As of August 9, the ceasefire held, but continuing troop deployments and sporadic violence left the situation tense. Displaced families hoped to resume normal life while fearing that another incident could restart the fighting. Their prospects depended on both immediate security and progress toward resolving the dispute.

Key Points

• Fighting from July 24 to 28 killed at least 43 people, most of them civilians, and displaced more than 300,000 across Thailand and Cambodia.
• A deadly clash in late May and a landmine incident injuring five Thai soldiers on July 23 preceded the wider fighting.
• Preah Vihear and Ta Muen Thom remain central to a territorial dispute shaped by historical rivalry and colonial border arrangements.
• Thailand's Constitutional Court suspended Paetongtarn Shinawatra after a leaked call with Hun Sen deepened a political crisis.
• Malaysia helped broker the July 28 ceasefire with support from China and the United States, but troops remained deployed and incidents continued.
• Thailand's tourism sector was losing nearly $92 million monthly, while border restrictions damaged trade and local livelihoods.
• As of August 9, aid and damage assessments were under way, but many displaced residents remained reluctant or unable to return home.