Cambodia has completely sealed its border with Thailand, marking a significant escalation in the ongoing military conflict since July 2025. This decision, made on December 13, 2025, despite failed international mediation efforts, including from the United States, is rooted in longstanding territorial disputes. The conflict has resulted in mass civilian evacuations and severe economic disruption, posing a growing threat to regional stability.
Story Highlights
- Cambodia has completely sealed its border with Thailand amid ongoing conflict.
- The closure follows failed international mediation, including US ceasefire attempts.
- Ongoing military exchanges have led to significant casualties and evacuations.
- Historic territorial disputes have reignited the conflict, despite past agreements.
Escalation of the Cambodia-Thailand Conflict
On December 13, 2025, Cambodia announced the complete closure of its border with Thailand. This decision marks a significant escalation in the ongoing military conflict that has intensified since July. Despite efforts by the United States to mediate a ceasefire, cross-border exchanges of fire have continued unabated. The Cambodian Interior Ministry cited the need for national protection as the primary reason for the closure, emphasizing the ongoing threat from Thai military actions.
The conflict has its roots in longstanding territorial disputes, particularly around significant sites such as the Preah Vihear temple. Earlier attempts to de-escalate tensions, including bilateral talks and partial border closures, have failed to prevent the current situation. The Thai military’s reinforcement of border areas and airstrikes have been met with Cambodian defensive measures, including the recent comprehensive shutdown.
#BREAKING: Cambodia suspends all border crossings with Thailand amid military conflict between two nation – Cambodian Interior Ministry pic.twitter.com/s5kSVusSRc
— TRT World Now (@TRTWorldNow) December 13, 2025
Impact on Civilians and Regional Stability
The closure and ongoing conflict have severely impacted civilians on both sides of the border. Over 140,000 Thai residents and 35,829 Cambodian citizens have been evacuated from the contested areas, facing disrupted livelihoods and safety concerns. The economic effects are also significant, with trade and tourism severely hampered by the border shutdown and military activities. The international community, particularly the United States, remains concerned about the potential for broader regional instability if the conflict continues unchecked.
Both Cambodia and Thailand have expressed a willingness to protect their territorial integrity and civilian populations, but diplomatic solutions remain elusive. Cambodia’s Prime Minister, Hun Manet, has called for international intervention at the UN Security Council, while Thailand demands a halt to Cambodian operations before any return to peace talks.
Historical Context and Future Prospects
The current conflict is the latest in a series of disputes over the undemarcated border areas between Cambodia and Thailand. Previous clashes, including those from 2008 to 2011, were addressed through international arbitration that favored Cambodia, yet tensions have persisted. The failure of a 2024 bilateral agreement to prevent this year’s escalation highlights the deep-seated nature of the conflict.
As both nations continue to reinforce their military presence along the border, the potential for a peaceful resolution seems distant. The ongoing conflict not only threatens regional stability but also poses a challenge to international diplomatic efforts. Observers note that without a significant shift in tactics or successful mediation, the stalemate is likely to continue, with devastating consequences for the affected populations.
Watch the report: Cambodia Shuts Thai Border As Fighting Continues Despite Trump Ceasefire Claim Amid Clashes | N18V
Sources:
- Why Thailand and Cambodia are fighting again after Trump ceasefire
- Trump says he’s sealed Thailand-Cambodia ceasefire, but fighting continues – The Korea Times
- Thai villagers stay to guard empty homes amid border clashes
