A recent confrontation between Thai riot police and Cambodian civilians in a disputed border region has resulted in significant injuries and heightened tensions. On Wednesday, Thai authorities deployed tear gas and rubber bullets against Cambodian protesters, leaving at least 23 Cambodians injured, according to Cambodian officials. Thailand defended its actions, stating that the use of force was necessary to prevent disorder after Cambodian protesters allegedly dismantled Thai defensive barriers and attacked officials with sticks, stones, and slingshots. The clash occurred in an area claimed by both countries—Thailand identifies it as part of Ban Nong Ya Kaew village in Sa Kaeo province, while Cambodia asserts it belongs to Prey Chan village in Bantheay Meanchey province. This incident marks the most significant escalation since a ceasefire agreement in July ended a five-day border conflict that claimed 48 lives and displaced thousands. Cambodian Prime Minister Hun Manet has called for international support, urging ASEAN and global leaders to intervene and prevent further unilateral actions by Thailand. The U.S. government has also weighed in, urging both nations to de-escalate tensions and finalize terms for a long-term observer mission along the border. The dispute stems from a century-long disagreement over undemarcated points along the 817 km border, originally mapped by France in 1907. Both countries have erected barbed wire fences in the area, sparking weeks of protests from civilians on both sides.