CommentASEAN unity under further threat amid geopolitical tumultThe conflict between Thailand and Cambodia stems from a border dispute dating back more than a century. © ReutersTORU TAKAHASHIJuly 29, 2025 06:59 JSTTOKYO -- Though Thailand and Cambodia agreed Monday to an unconditional ceasefire in their border clash, which so far has killed more than 30 people, the conflict's roots in the complex history of the Indochinese Peninsula mean it may not be so easily resolved.