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At least a dozen people were killed after the two countries exchanged fire after simmering tensions over a border dispute boiled over on Thursday.

By Sui-Lee Wee

Reporting from Surin Province, Thailand

Gunfire, rockets and bombs dropped by F-16 fighter jets thundered across the long-contested border between Thailand and Cambodia on Thursday, killing at least a dozen people, in a drastic escalation of hostilities between the two neighbors.