Quartz: China, North Korea’s only friend, is getting uncomfortable with its renegade neighbor

Officially, China is North Korea's biggest ally and trading partner. But behind the scenes, Bejing may be getting uneasy with its neighbor's bellicose baiting of the US. North Korea is possibly preparing another missile test, or potentially a launch, though this is not viewed as a serious threat to America. Yet rather than backing Pyongyang, Beijing. Read more... http://qz.com/71194