In an age of instant headlines and 24-hour media cycles, even a brief armed clash along the disputed border can reach far beyond the battlefield. The recently epitomised “five-day war” between Cambodia and Thailand was not a war in the conventional sense, but it was a concentrated performance of statecraft, where politics, diplomacy and cartography intertwined with deadly ammunition.
The border disputes between the two eternal neighbours, bound not by choice but by geography, history and interdependence, have lasted for centuries. However, the most recent armed clash, brief but sharp, is worth closer scrutiny because it reveals three enduring truths about the Cambodia-Thailand border dynamic.
First, the enduring conflict was as much about “maps” as about men. Bangkok’s unilaterally drawn maps that are inconsistent with international legal instruments serve as powerful tools of narrative sovereignty. Phnom Penh’s counterstrategy is legalist: invoking the 1962 ICJ judgment, the 2013 ICJ interpretation and the colonial-era treaty maps to solidify its position as “rule-based”. These conflicting cartographies shape how publics and partners interpret “truth” on the ground.
Second, diplomacy began before the guns fell silent. ASEAN’s chair issued statements, and back-channel contacts were activated. However, the five days also highlighted the limits of “ASEAN centrality” in immediate security crises.
The hegemonic intervention carries the most weight, demanding an “immediate and unconditional” ceasefire agreement between the two countries. For Cambodia, the challenge is to internationalise the legal narrative without alienating regional partners. For Thailand, the incentive is to demonstrate firmness without triggering wider scrutiny.
Third, such short conflicts leave long, or even generational, legacies. Each incident changes the reference points in negotiations and cements particular versions of history in textbooks and media archives. Even when the war stops, the information war continues through different cartographies and historical nationalist narratives.
The lessons? The five-day war between these asymmetrical neighbours has not settled the underlying issues.
What matters is the post-war narrative battle: whose map is normalised, whose legal arguments resonate in international community and whose restraint is recognised by third parties. The war is less a territorial test than a contest of legitimacy.
Avoiding the next flare-up will require more than just political etiquette. It demands legal clarity in cartography, joint verification of incidents, and depoliticisation of border livelihoods so that traders, farmers, heritage custodians and ordinary locals are not the first casualties of the conflict. Without these, the Cambodia-Thailand border will remain a fault line, waiting for the next five-day war to redraw its contours in blood and ink.
Lak Chansok is senior lecture of International Relations at the Institute for International Studies and Public Policy of the Royal University of Phnom Penh. The views and opinions expressed are his own.
