The North Koreans explode something big enough to generate detectable seismic activity but there is a wide difference of opinion about if they were completely successful in making all their atomic bomb fantasies come real. There are good reaction round ups at DANEgerous and Michelle Malkin and Q and O blogs.
My biggest concern is that very few living individuals have direct memory of witnessing nuclear destruction. For almost everyone living on the planet the danger of nuclear explosion is only a mental concept. People understand potential against the background of their experience and so nuclear weapons are thought of as something probably worse than the Indonesian Tsunami or Hurricane Katrina. As much as I despair the thought it may well take the experience of a real calamity to concentrate the minds about the magnitude of the threat to our happy affluent little lives.
