Japan, China and South Korea are likely to hold their trilateral summit in May or later, with Beijing carefully watching the political situations in its two neighbors in the coming months, diplomatic sources said Thursday.The leadership of Chinese President Xi Jinping will monitor whether Japanese Prime Minister Fumio Kishida can maintain his political footing at home, while paying attention to the outcome of the general election in South Korea in April, the sources said.In Japan, the approval ratings for Kishida's Cabinet have plunged to their lowest levels since he took office in October …READ FULL ARTICLE