let's get back to adair turner, jon moulton, and mark at -- mark gilbert. a? q get aggravated by president trump's tweets or do you step in and try to mediate? jon: i think ability is aggravated by president trump's tweets. he hates your species and quite a lot of other species and that is clear. saying is deadly serious. here we are talking about a very unstable regime who are now getting incredibly close to having weapons of very serious capability, even a not very well -- explosivelusive bomb anywhere in the united states is a bigger -- event you would hope not to see. i think someone can take out north korean capability and the choices are china or the united states and i don't think that can be long deferred. ,hat process is extremely risky but less risky than the process of just letting this carry-on. i wish there was a better solution. this is not an economic or business problem, it is a serious threat. >> presumably it is not as much of a risk if china and the u.s. move together to do this. hopefully hits maybe his -- maybe his tweets is an optimisti