More than half a million people in Cambodia have been displaced by two weeks of deadly border clashes with neighbouring Thailand, Phnom Penh said Sunday, ahead of regional talks aimed at easing tensions.The renewed fighting between the Southeast Asian neighbours this month, including with tanks, drones and artillery, has killed at least 22 people in Thailand and 19 in Cambodia, officials said.The conflict stems from a territorial dispute over the colonial-era demarcation of their 800-kilometre (500-mile) border and a smattering of ancient temple ruins situated on the frontier.Cambodia and Thailand both said Sunday that a meeting of Southeast Asian foreign...