There are different kinds of diplomacy and they have different consequences. It's a tricky situation with N. Korea, If we cut off his supplies of oil and other aid, then we risk killing millions because Kim Jong Il will either let them starve, go on some mass murder killing spree to let the world know he's serious, or start selling nukes to the taliban. If we go with Mick, or Mr. Breeze most eloquent options, then we risk a couple dirty bombs, sent our way. (they may have as many as 7 nukes left).