North Korea detains third U.S. citizen

By James PearsonSEOUL (Reuters) - North Korea detained a U.S. citizen on Saturday as he attempted to leave the country, bringing the total number of Americans held by the isolated country to three.Korean-American Tony Kim had spent a month teaching an accounting course at the Pyongyang University of Science and Technology (PUST), the university's chancellor, Chan-Mo Park, told Reuters on Sunday.The arrest took place on Saturday morning local time, a statement by the university said, and was "rel