SEOUL -- In the last three weeks, Prime Minister Stephen Harper has touched down in India, China, Singapore, Hong Kong and, on Monday, South Korea, parts of the world his government paid scant attention to since taking office early in 2006. But on the eve of the beginning of his fifth year as prime minister, Asia is the priority in his government's foreign policy. "I would not characterize this as a shift but I would characterize it as a highlighting of an important foreign policy priority," Mr. Harper said at a joint press conference here with South Korean President Lee...