Ma Ying-jeou, Taiwan's president, left, and Xi Jinping, China's president, shake hands during a photo session ahead of their meeting in Singapore, on Saturday, Nov. 7, 2015. The leaders of China and Taiwan shook hands ahead of a carefully managed meeting in Singapore that will mark the first summit since the two sides clashed in a civil war seven decades ago. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images