beijing, the chinese talks about negative factors affecting the two nations. let's bring in gorden chang, author of "nuclear show down." did the chinese just say without using his name donald trump just stabbed us in the back? >> yeah. >> shepard: is that what they said? >> that's what they said. also in the context of what the foreign ministry spokesman said, it's clear he's talking about the united states and south korea. you never hear government officials use language like this in public. much less diplomats. >> shepard: from china. >> from anybody. this is just unprecedented. especially from china. so what we have right now is somewhat distressed and anger inside the chinese political superior. obviously they're directing it against the united states. there's a number of theories why this is occurring right now. indeed, relations between the u.s. and china are growing to