NUSA DUA, Indonesia (Reuters) - Japanese Prime Minister Shinzo Abe and Chinese President Xi Jinping shook hands during an APEC regional summit in Bali on Monday but had no talks on a territorial island dispute, Japanese officials said. Relations between the world's second- and third-largest economies have been troubled for months because of a sovereignty dispute over tiny islands in the East China Sea known as the Senkaku in Japan and the Diaoyu in China. The two also remain at odds over their respective conduct during World War Two. ...