North Korea accuses South Korea of kidnapping its citizens and demands their immediate return after Seoul's Ministry of Unification said 13 of them had defected to South Korea from China, where they worked in a Pyongyang-operated restaurant. China says that the 13 people, a male manager and 12 young female employees, had legitimate passports and had freely exited China. [http:--www.straitstimes.com-asia-east-asia-north-korea-claims-defectors-were-kidnapped-by-seoul ("The Straits Times")]North Korean defectors