I wonder if we just aren't giving N Korea every opportunity to develop a weapon they can and will use against S Korea. Thus, drawing the U.S. into a regional war again. Seems there is nothing short of declaring war ourselves that will stop the "idiot" little weasel of a dictator, Kim Jong-il, of N. Korea. Inevitably, any conflict with N. Korea will put the U.S. at odds with China. They don't publicly approve of all what N. Korea does, but the country does provide a buffer zone between the West and Communist China.