N. Korea could test-launch missile at new launch site

North Korea could test-launch a missile this year from its second and more sophisticated launch site, in an apparent move to improve its long-range missile capabilities, a U.S. expert said Tuesday. South Korean and U.S. officials have monitored the new Tongchang-ri missile base on the North\'s west coast for more than two years, and satellite images showed early this year that construction of a launch tower at the base was nearly completed.