Senior U.S. and Taiwanese defense officials are set to meet next week in Colorado as part of an annual conference organized by a private-sector group to facilitate discussions about arms sales to the self-governing island. Ko Chen-Heng, Taiwan's vice minister of national defense, will lead the delegation from Taipei. William Greenwalt, deputy under secretary of defense for industrial policy, is scheduled to be the senior Pentagon representative at the Sept. 11-12 event in Denver. The conference, organized by the U.S.-Taiwan...