“For China, the issue of Taiwan is as important as anything on their docket. The idea of One-China is at the heart of their conception as a nation,” Obama said at his last year-end news conference at the White House. “If you’re going to upend this understanding, you have to have thought through what the consequences are.”

“The Taiwanese have agreed to that; as long as they’re able to continue to function with some degree of autonomy, they won’t charge forward and declare independence,” Obama said. “That status quo, although not completely satisfactory to all the parties involved, has kept the peace and allowed the Taiwanese to be a pretty successful economy and a people who have a high degree of self-determination.”

http://www.bloombergquint.com/politics/2016/12/16/obama-says-trump-must-consider-consequences-of-any-taiwan-change