on the other hand they don't enforce the sanctions but they are afraid if they choke north korea off economically the union will collapse. friendly to the u.s. right on chinese borders. how do we change that calculus diplomatically and eventually militarily so that they see north korea as more of a problem than it's worth and they take meaningful action? pete: how do you squeeze china just briefly on that. what more can be done to bring them to that table? >> militarily, a couple of things. one, south korea has asked for tactical nukes for the united states to look at reintroducing tactical nuclear weapons back into the south korean peninsula. we had pulled them out under bush sr. and the south korean defense minister recently asked for us to put those back. in secondly, the japanese are looking to hugely modify and increase the lethality of its military. its constitution con strains its post world war ii constitution con strains the