Two of the Navy's top admirals said Tuesday that China's refusal to permit a U.S. aircraft carrier to make a Thanksgiving port call at Hong Kong was surprising and troubling. "This is perplexing. It's not helpful," Adm. Timothy Keating, commander of U.S. Pacific Command, told reporters in a videoteleconference from his headquarters at Camp Smith, Hawaii. "It's not, in our view, conduct that is indicative of a country that understands its obligations as a responsible nation," he said, adding that he hopes it does not indicate a lasting blockage of port visits. The USS Kitty Hawk, which has its home...