Soldiers traded fire over a disputed border after weeks of diplomatic tension between the Southeast Asian nations.

July 23, 2025, 10:48 p.m. ET
Cambodia and Thailand exchanged fire on Thursday along their heavily patrolled and contested border in the Thai province of Surin, escalating tensions a day after Thailand expelled Cambodia’s ambassador following a land-mine incident that injured a Thai soldier.
Shots were heard at 8.20 a.m. and came from an area about 650 feet east of Prasat Ta Muen Thom, an ancient Khmer-Hindu temple along the disputed border, according to the Thai army. Earlier, Thai soldiers had heard the sound of a drone and saw six armed Cambodian soldiers, the army added. Cambodian officials did not immediately respond to questions from The New York Times. There were no casualties reported.
The Thai army returned fire with a field cannon, according to Channel 3 News, a Thai news website. Officials from Cambodia did not immediately respond to requests for comment.
This is a developing story.
Kittiphum Sringammuang and Sun Narin contributed reporting.
Sui-Lee Wee is the Southeast Asia bureau chief for The Times, overseeing coverage of 11 countries in the region.