the regi -- flow into the region to be defense in any possible aggression and be a forward-deployed presence of military forces. whether it is more expensive to keep them there or withdraw them, the president concerned about the expense would be something that would remaino be seen. but right now we've come out of this summit still with so many questions and this is one of the big wunz, what exactly does president trump want to have happen next? >> i'm curious, the president said it is not in the agreement but kim jong-un agreed to destroy --t was described as a missile engine testing site. how big of a step is that? >> reporter: well it depends on what missile testing site it is. there is some commercial imagery on the web showing potentially the north koreans working at a missile test site and dismantling some part of. it but right now the u.s. intelligence community will tell you even as they look at this imagery and of