N Korean defector was appointed to check for disloyalty
North Korea's former deputy ambassador to London, Thae Yong-ho, who defected to South Korea has revealed that he was appointed to spy on embassy colleagues and report signs of disloyalty to the Bowibu, the North Korean Security Agency. "I had to write back if they...met any British or South Koreans in secret, but I always reported good things," he said.