Pre-war escalation and mine incidents
A fatal May border skirmish, Cambodia's ICJ appeal, military buildup, and disputed mine incidents in July moved the long-running frontier dispute toward open conflict.
Conflict archive
Thailand-Cambodia Border Conflict Weapons and Equipment
Border clashes between Thailand and Cambodia escalated in July 2025 and flared again later that year along disputed frontier areas.
The 2025 Thailand-Cambodia Border Conflict is a renewed armed confrontation along disputed sections of the two countries' roughly 800-kilometer land border. Fighting escalated from a May skirmish and July landmine incidents into five days of artillery, rocket, drone, and airstrike exchanges in July, followed by a fragile ceasefire, an October peace declaration, and renewed clashes in November and December.
This archive tracks sourced weapon and equipment use in the recent Thailand-Cambodia border fighting.
Entries are limited to systems with direct documentation connecting them to the conflict.
2 weapon systemsContext
- Status
- Published archive
- Location
- Thailand-Cambodia border, centered on the Dangrek Mountains and disputed temple areas near Surin, Sisaket, Oddar Meanchey, and Preah Vihear
- Countries
- Thailand, Cambodia
- Regions
- Surin, Sisaket, Ubon Ratchathani, Oddar Meanchey, Preah Vihear, Banteay Meanchey
- Domains
- land, air, missile strikes, UAV, mine warfare, border clashes
The archive is currently narrow because only directly documented equipment use is included. Available sourcing supports a land-border fight shaped by artillery and rocket fire, Thai airpower, reported UAV activity, mines, and armored mobility; the connected weapon entry documents Thailand's Ukrainian-built BTR-3E1 armored personnel carriers near the Poipet-Khlong Lek crossing and later border combat reporting.
Map
Thailand-Cambodia border, centered on the Dangrek Mountains and disputed temple areas near Surin, Sisaket, Oddar Meanchey, and Preah Vihear
Map data from OpenStreetMap contributors.
Timeline
Key Events
Fatal border skirmish raises tensions
A Cambodian soldier was killed in an earlier confrontation, after which both governments increased diplomatic and military pressure along disputed border areas.
Sources: CSIS: Thailand launches airstrikes amid border dispute, WHO: Cambodia-Thailand PHSA
Landmine blast triggers diplomatic rupture
A landmine incident wounded Thai soldiers and led Thailand to withdraw its ambassador, expel Cambodia's envoy, close border crossings, and place forces on higher alert.
Sources: AP: July 2025 border clashes
Open fighting and airstrikes begin
Thai and Cambodian forces fought in multiple contested areas with small arms, artillery, rockets, drones, and Thai F-16 airstrikes; both governments blamed the other for initiating the escalation.
Sources: AP: July 2025 border clashes, CSIS: Thailand launches airstrikes amid border dispute
Malaysia hosts an immediate ceasefire
Malaysia hosted talks that produced an immediate and unconditional ceasefire, while ASEAN foreign ministers urged restraint, negotiations, and an end to hostilities.
Sources: AP: Ceasefire holds despite skirmishes, ASEAN: Foreign ministers' statement
Kuala Lumpur declaration formalizes monitoring
The Cambodian and Thai prime ministers signed a joint declaration in Kuala Lumpur, witnessed by the United States and Malaysia, calling for ASEAN observer monitoring, heavy-weapon removal, demining, and prisoner release steps.
Sources: White House: Kuala Lumpur joint declaration
Peace implementation pauses after another mine blast
Thailand paused implementation of the ceasefire after a landmine explosion injured Thai soldiers in Sisaket province; Cambodia denied laying new mines and attributed the blast to remnants of older conflicts.
Sources: AP: November landmine and truce pause
Large-scale fighting resumes
A new border skirmish set off renewed large-scale fighting, with Thailand conducting airstrikes and Cambodia using BM-21 rockets during the December escalation.
Sources: AP: December fighting resumes
Second ceasefire signed
Thailand and Cambodia signed another ceasefire calling for a halt to military movements and military airspace violations, with prisoner release tied to the truce holding.
Sources: AP: December ceasefire agreement
Phases
July border combat
The conflict escalated into multi-sector border fighting involving artillery, rockets, drones, and Thai airstrikes around contested temple and crossing areas.
Ceasefire, monitoring talks, and fragile implementation
A Malaysia-hosted ceasefire reduced large-scale combat but left disputed responsibility, mine clearance, prisoner release, and border demarcation issues unresolved; the October Kuala Lumpur declaration attempted to formalize monitoring and de-escalation.
Renewed mine crisis and December fighting
Thailand paused the peace process after another mine blast, and renewed December clashes brought further airstrikes, rocket fire, and ground combat before a second ceasefire was signed.
External Support
No third-party combat coalition is documented for this archive. The relevant external context is supplier and mediation related: Thailand operated Ukrainian-built BTR-3E1 armored vehicles in the conflict, while Malaysia, ASEAN observers, and the United States were involved in ceasefire diplomacy and monitoring arrangements.
Images
Category
Armored Vehicles
Troop carriers, infantry fighting vehicles, and protected mobility.
Category
Tanks
Heavy armor built around direct fire, protection, and battlefield shock.
Conflict Sources
Source claims about battlefield responsibility remain contested, so the overview attributes disputed triggers and conduct conservatively. The equipment archive is intentionally limited to systems with direct conflict-use sourcing, not every platform reported in general news coverage.
- AP: July 2025 border clashesPublisher: Associated Press | Note: Supports the July 23 landmine trigger, July 24 fighting, disputed responsibility, affected border areas, drones, rockets, artillery, and Thai airstrikes. | Accessed: 2026-06-20
- AP: Ceasefire holds despite skirmishesPublisher: Associated Press | Note: Supports the July 28 Malaysia-hosted ceasefire, early ceasefire-violation allegations, displacement context, and U.S./Malaysia monitoring references. | Accessed: 2026-06-20
- AP: November landmine and truce pausePublisher: Associated Press | Note: Supports the November mine incident, Thailand's pause in truce implementation, Cambodia's denial, and terms covering heavy weapons, landmines, and prisoner release. | Accessed: 2026-06-20
- AP: December fighting resumesPublisher: Associated Press | Note: Supports the December 7 trigger, renewed large-scale fighting, Thai airstrikes, Cambodian BM-21 rocket fire, and ceasefire background. | Accessed: 2026-06-20
- AP: December ceasefire agreementPublisher: Associated Press | Note: Supports the December 27 ceasefire terms, airspace and military-movement halt, and planned prisoner repatriation condition. | Accessed: 2026-06-20
- WHO: Cambodia-Thailand PHSAPublisher: World Health Organization | Note: Supports the long-disputed 800-kilometer land border, May 2025 escalation, ICJ appeal, July confrontation, and affected Cambodian border provinces. | Accessed: 2026-06-20
- CSIS: Thailand launches airstrikes amid border disputePublisher: Center for Strategic and International Studies | Note: Supports the long-running dispute context, May 28 skirmish, July 24 open conflict, Ta Muen Thom and Preah Vihear geography, and weapons-domain context. | Accessed: 2026-06-20
- ASEAN: Foreign ministers' statementPublisher: ASEAN | Note: Supports ASEAN's July 28 call for restraint, ceasefire, negotiations, and ASEAN Chair facilitation. | Accessed: 2026-06-20
- White House: Kuala Lumpur joint declarationPublisher: The White House | Note: Supports the October 26 joint declaration, ASEAN Observer Team, heavy-weapon removal, demining, border mechanisms, and U.S./Malaysia witness roles. | Accessed: 2026-06-20
- UNITED24 Media: BTR-3E1s in ThailandPublisher: UNITED24 Media | Note: Supports the weapon-context note that Royal Thai Army BTR-3E1 armored vehicles, built in Ukraine, were documented near the Poipet-Khlong Lek border crossing during the conflict. | Accessed: 2026-06-20
- Wikimedia Commons: Prasat Ta Muen Thom-019.jpgPublisher: Wikimedia Commons | Note: Supports image provenance and licensing for the Prasat Ta Muen Thom photograph. | Accessed: 2026-06-20
- Wikimedia Commons: Preah Vihear Annex I mapPublisher: Wikimedia Commons | Note: Supports image provenance and public-domain licensing for the historic Dangrek Mountains boundary map extract. | Accessed: 2026-06-20
