have to assume that north korea has the capability to make these to a miss aisle and launch the missile at the united states. they act as if they have the capability and that's the proven step. >> the intelligence to build these, adam, how much of it is home grown? >> we know that north korea has gained a great deal of indigenous capability. we believe that they have -- there's some disagreement about the amount of assistance that they get from other sources. for instance, there is some possibility that missile designs are still being transferred into the country and then being produced indigenously. i don't think we can rely on that kind of uncertainty. we can't trust that north korea can build these systems.