trade with south korea, the president ay parentally is not happy with way the south koreans are talking about this in recent weeks and may prefer a more diplomatic route in talking with the north koreans. what is that doing, do you think, to the u.s. position in the region? is this president becoming more isolated? if he's threatening china and south korea and so on? in addition to north korea? >> well, again, this is why context is so important. i think we have a president and an administration that was very clear from the very first day that trade was a big issue for the united states. but it's looking at trade through one specific bilateral ang angle. so u.s. r.o.k., south korea trade, there is a trade agreement nap is being viewed separately as from the north korea issue. interestingly, president trump's latest tweet is trying to make the connection between u.s./china bilateral trade and the north korean issue.