Thailand / Cambodia

The Thailand and Cambodia border remains a high tension zone due to unresolved colonial demarcation issues and incomplete implementation of the International Court of Justice 1962 ruling, which affirmed Cambodia’s sovereignty over Preah Vihear Temple while leaving its 4.6 square kilometer vicinity undefined. This legal ambiguity has precipitated repeated military confrontations, most severely during 2008 and 2011 when hostilities displaced approximately 100,000 civilians and required ICJ intervention. The area’s dense terrain and extensive landmine contamination, legacy of Cambodia’s civil conflicts, continue to impede border management while violating both states’ obligations under the 1997 Mine Ban Treaty. Despite conflict resolution mechanisms under the 2000 ASEAN Treaty on Amity and Cooperation and repeated UN Security Council appeals for demilitarization, the border remains prone to violent outbreaks, with the 24 July 2025 escalation marking the most serious breach of stability since 2011. Following the escalation on the 24th, the World Embassy Desk (WED) is closely monitoring the Thailand–Cambodia border to track developments and assess potential risks to regional security.

24th July 2025, Escalation to Full-Scale Border Conflict
On 24 July 2025, a military confrontation erupted between Thailand and Cambodia near the disputed border area surrounding the Preah Vihear Temple, a UNESCO World Heritage Site with a long history of territorial disputes. According to initial reports, the clash began after both sides accused each other of violating the border, leading to an exchange of gunfire and mortar shelling. Cambodian officials claimed that Thai military personnel had crossed into contested territory, prompting a defensive response from Cambodian forces. In contrast, Thai authorities asserted that Cambodian troops had fired first, violating the 2023 bilateral border ceasefire agreement.

The conflict has triggered a severe humanitarian emergency, with Thai authorities evacuating over 40,000 civilians from 86 villages across Surin, Sisaket, and Ubon Ratchathani provinces due to sustained shelling and airstrikes. Subsequently, 11-12 Thai civilians have been killed, including an 8-year-old boy in Surin and a 15-year-old in Sisaket, while at least 24 civilians and 7 soldiers have been wounded in attacks that struck residential areas, a hospital, and critical infrastructure. On the Cambodian side, while official displacement numbers remain unreported, Prime Minister Hun Manet acknowledged shelling in Oddar Meanchey and Preah Vihear provinces, suggesting significant internal displacement. International media including Al Jazeera, Reuters and BBC have verified these figures through on-the-ground reporting and statements from Thai district officials. The situation remains fluid, with evacuees sheltering in makeshift camps and concrete bunkers as hostilities continue. The crisis has been compounded by Thailand’s complete closure of all land border crossings, stranding migrant workers and disrupting cross-border trade, while Cambodia has retaliated by halting Thai imports and expelling diplomats. This represents the most serious armed confrontation between ASEAN members since the 2011 Preah Vihear clashes.

The diplomatic fallout was swift, with Cambodia formally lodging a complaint with the UN Security Council, accusing Thailand of “unprovoked aggression” and demanding immediate intervention. Thailand, meanwhile, called for an emergency ASEAN meeting, framing its actions as defensive and accusing Cambodia of destabilizing the border region. Both nations have since reinforced their military presence along the contested area, raising concerns of a broader conflict. The situation has also had severe humanitarian consequences, with reports indicating that over 1,000 civilians from border villages have been displaced due to the violence. Local aid groups are struggling to provide assistance amid the ongoing insecurity, and there are fears of a worsening crisis if hostilities continue.

The conflict has been accompanied by severe restrictions on press freedom and information flow from both sides. Beginning on 24 July, Cambodian authorities revoked the press credentials of at least 12 foreign journalists attempting to report from conflict zones in Oddar Meanchey and Preah Vihear provinces, while Thai officials ordered telecommunications companies to block “sensitive military content” on social media platforms. By 26 July, these measures had escalated to include: the Cambodian government’s complete shutdown of independent media access to all border areas; Thailand’s invocation of its Computer Crimes Act to arrest three citizen journalists for sharing “unverified conflict footage”; and both nations’ state-run media publishing contradictory narratives of casualty figures and territorial control. These coordinated efforts to control information have significantly hampered independent verification of events on the ground, with organizations like Reporters Without Borders condemning the actions as “a deliberate wartime information blackout.” The restrictions appear designed to prevent documentation of potential human rights violations while allowing both governments to maintain tightly controlled narratives about the conflict’s progression. These actions raise serious concerns under international law. Cambodia’s journalist bans may violate its obligations under Article 19 of the International Covenant on Civil and Political Rights (ICCPR), while Thailand’s social media censorship and arrests could contravene both the ICCPR and ASEAN’s 2012 Human Rights Declaration.

The international community has responded with calls for restraint. UN Secretary-General António Guterres urged both sides to cease hostilities immediately and return to dialogue, emphasizing the need to avoid further loss of life. ASEAN issued a statement expressing deep concern and offering to mediate between the two nations. Major powers, including China and the United States, have also weighed in, with China proposing to facilitate negotiations given its historical ties to both countries. The UN Security Council is expected to convene an emergency session on 25 July 2025 to discuss potential measures, including the deployment of a UN observer mission to monitor the situation. Additionally, given the legal history of the Preah Vihear dispute, the International Court of Justice (ICJ) may be called upon to provide further clarity on the border issue. The WED strongly encourages all stakeholders to pursue constructive dialogue and avail themselves of established conflict resolution mechanisms to de-escalate tensions and work towards a sustainable peaceful resolution.


16th July 2025, Landmine Explosion along the Thailand–Cambodia Border
On 16 July 2025, a landmine explosion in the disputed Chong Bok border area of Ubon Ratchathani province, Thailand, injured three Thai soldiers, one severely enough to require leg amputation. The Thai government has accused Cambodian forces of deliberately planting new landmines in the contested zone, which would violate Cambodia’s obligations under the 1997 Ottawa Mine Ban Treaty. Cambodia has denied these allegations, stating the soldiers triggered old unexploded ordnance from past conflicts and had deviated from agreed patrol routes.

This incident significantly heightened tensions between the two nations in the lead-up to the more severe clashes on 24 July. The United Nations has expressed particular concern about the use of landmines given their disproportionate impact on civilian populations in border regions. A UN Mine Action Service (UNMAS) assessment team has been requested to investigate the incident’s circumstances, while diplomatic channels work to prevent further escalation. The episode underscores the fragile security situation along the Thailand-Cambodia border and the urgent need for renewed demining cooperation and confidence-building measures between the two nations.