>> is it time to send some sort of diplomatic envoy to pyongyang on behalf of the president of the united states? >> the bush administration actually did try diplomacy. they signed two agreements with the north koreans. the problem is, they cheat on them. they've cheated on every one of these. there's only one country with whom diplomacy would work, and that's china. the chinese provide 50% of north korea's food, 80% of its fuel. this are people in china who opened the taps and allowed north korea to survive. the problem is the chinese have never thought that they could put the real pressure on the north koreans without danger of the regime collapsing. so as for the chinese, they worry about all this stuff. they don't like the unpredict ability of this regime. millions of refugees into china, more importantly, it means almost inevitably the unification of the koreas, north and south, if the east german/west german style.