Dhaka, Dec. 11 -- Renewed fighting along the Thailand-Cambodia border has forced hundreds of thousands of residents to flee their homes, with evacuees describing emotional and rushed escapes.

Amnat Meephew, 73, had only moments to gather his clothes before leaving his home just a few kilometers from the border, marking the second mass displacement in four months. "Sometimes when I think about it, I tear up. Why are Thais and Cambodians, who are like siblings, fighting?" he said, his voice breaking.

The clashes, which erupted Monday, disrupted a ceasefire brokered by U.S. President Donald Trump after July's fighting, which left dozens dead on both sides. Thai officials reported around 400,000 evacuees, while Cambodia said more than 127,000...