Thailand and Cambodia Sign Ceasefire After 20 Days of Border Conflict

Thailand and Cambodia sign ceasefire ending 20 days of border conflict that killed 101+ and displaced 500,000+. Agreement includes troop freeze, prisoner release, and ASEAN monitoring.

Historic Ceasefire Ends Weeks of Deadly Border Fighting

Thailand and Cambodia have signed a landmark ceasefire agreement, bringing an end to 20 days of intense border clashes that have killed at least 101 people and displaced over half a million civilians on both sides of the disputed frontier. The truce, which took effect at 12:00 noon local time on December 27, 2025 (06:00 CET), represents a crucial diplomatic breakthrough in one of Southeast Asia's most volatile border disputes.

Ceasefire Terms and Conditions

The agreement was signed by Defense Minister Natthaphon Narkphanit of Thailand and Defense Minister Tea Seiha of Cambodia after three days of intensive negotiations. According to the Cambodian Defense Ministry's Facebook announcement, the ceasefire applies to 'all types of weapons and includes attacks on civilians, civilian objects and infrastructure, as well as military targets of both sides, in all cases and in all areas.'

Key provisions include:

  • Immediate cessation of all military operations
  • Maintenance of current troop deployments without further movement
  • Return of displaced civilians to their homes
  • Thailand's commitment to release 18 captured Cambodian soldiers if the ceasefire holds for 72 hours
  • Direct communication channels between defense ministers and military chiefs
  • Monitoring by ASEAN observers

'This agreement must not be violated under any circumstances,' the official statement emphasized, highlighting the fragility of the peace process.

Background of the Conflict

The border dispute between Thailand and Cambodia dates back to colonial-era boundary demarcations established under the 1904 and 1907 agreements between the Kingdom of Siam (modern Thailand) and French Indochina. The 2025 Cambodia-Thailand conflict represents the latest and most severe escalation in decades of tensions.

At the heart of the dispute lies the Preah Vihear temple complex, which the International Court of Justice awarded to Cambodia in 1962. However, the court did not clearly delineate the surrounding territory, leaving approximately 4.6 square kilometers of land in dispute. Thailand maintains that colonial-era errors were made in establishing the border.

The current fighting began on December 7, 2025, with a brief 30-minute border skirmish that quickly escalated into full-scale conflict. Thailand launched 'Operation Sattawat' on December 10, seizing several localities in northern Cambodia. The fighting involved F-16 fighter jets, rocket fire, artillery barrages, and drone attacks along the 817-kilometer border.

Humanitarian Crisis and Casualties

The conflict has created a severe humanitarian crisis, with over 500,000 people displaced from their homes on both sides of the border. According to The Diplomat's analysis, while Thailand has publicly acknowledged 21 soldier deaths, Cambodia has kept military casualties secret. However, provincial health data reveals over 400 Cambodian soldiers and border police wounded in Preah Vihear province alone, with at least 13 confirmed deaths.

The displacement has overwhelmed humanitarian organizations, with World Vision issuing its 17th situation report on the crisis in mid-December. Displaced civilians face overcrowded conditions in temporary camps, limited access to clean water and sanitation, and disruption to essential services.

Diplomatic Context and Previous Ceasefires

This marks the third ceasefire attempt between the two nations in 2025. A previous truce brokered by US President Donald Trump and Malaysian Prime Minister Anwar Ibrahim in July collapsed after several weeks. The current agreement comes amid renewed international pressure for de-escalation.

'We welcome this important step toward peace and stability in Southeast Asia,' said a spokesperson for the United Nations, while ASEAN officials have expressed cautious optimism about the agreement's prospects.

The timing of the ceasefire announcement was particularly dramatic, coming just 30 minutes after Cambodia's Defense Ministry reported that Thai F-16 fighter jets had dropped 16 bombs in Banteay Meanchey province. This incident highlighted the intense volatility of the situation even during negotiations.

Regional Implications and Future Prospects

The ceasefire has significant implications for regional stability in Southeast Asia. Both countries are members of ASEAN, and the conflict has tested the organization's ability to mediate regional disputes. The agreement includes provisions for ASEAN observers to monitor compliance, representing an important role for the regional bloc.

Looking ahead, trilateral talks involving Cambodia, Thailand, and China are scheduled to begin in China's Yunnan Province to discuss the border situation. These talks could provide a framework for more permanent border demarcation agreements.

However, analysts remain cautious. 'The underlying territorial disputes remain unresolved, and both sides have shown they're willing to return to fighting when diplomatic efforts fail,' noted Southeast Asia security expert Dr. Sarah Chen. 'This ceasefire provides a breathing space, but lasting peace will require addressing the root causes of the conflict.'

The international community will be watching closely to see if this ceasefire holds longer than its predecessors, offering hope for an end to one of Asia's most persistent border conflicts.

Mei Zhang

Mei Zhang is an award-winning environmental journalist from China, renowned for her impactful sustainability reporting. Her work illuminates critical ecological challenges and solutions.

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