Thailand on Tuesday cancelled a long-standing agreement with Cambodia to work towards joint offshore energy exploration, Thailand’s prime minister said, defying calls from its neighbour to stay the course on the 25-year-old pact. The Thai cabinet’s cancellation of the 2001 agreement, which seeks to develop a framework to jointly explore hydrocarbons in parts of the Gulf of Thailand where the claims of Thailand and Cambodia overlap, had long been expected and follows two rounds of armed...