despite no nuclear missile tests so far, tensions between the u.s. and north korea are rising. here to weigh in, author of "nuclear showdown," gordon chang. thank you so much for joining us, gordon, we appreciate it. >> thank you, elizabeth. elizabeth: focus across the globe are bracing for a test this weekend, but, in fact, another network said you didn't think it would take place this weekend. why? >> well, after the missile strikes that president trump authorized on syria, he did that while xi jinping, the ruler of china, was next to him. china and syria are really good friends, and i think what happened was that the chinese were stunned. they then lost whatever confidence that they had that they would be able to control trump, and they think probably that they couldn't figure him out anymore. so i think what the chinese did was work with the north koreans to make sure there were no provocations on day of the sun, and that's exactly what happened. now, we're going to have to see what north korea does. they could detonate this nuke sometime, they certainly will. they've already sealed it in a