Trump may have just thrown decades of US-China relations into disarray

http://www.vox.com/world/2016/12/2/13824092/trump-phone-call-president-taiwan-china
"With this latest call, the president-elect hasn’t just caused a headache that Obama will have to deal with during his last weeks in office; he’s also given a worrying hint of the kind of diplomatic crises that may erupt once he moves into the White House."