In light of Sunday's nuclear test, an unidentified North Korean official announced to the state news agency today, "We hope the situation will be resolved before an unfortunate incident of us firing a nuclear missile." But there's still doubt about the real nature of Sunday's test. However successful North Korea's nuclear test might have been, the fact that it happened at all is a set-back for efforts at non-proliferation. At the United Nations today, even China says there must be "some punitive action" against North Korea for testing a nuclear weapon. America's Ambassador John Bolton called for a "strong resolution and swift response from the Security Council." Who's to blame? We hear from the UN, see how North Korea's test compares to those of other nations and ask about failures of diplomacy.