Just over a week after North Korea's test of a nuclear device [LINK North Korea's Sixth Nuclear Test Is Its Biggest], the United States has secured a fresh set of U.N. sanctions on the country. The speed with which the U.N. Security Council adopted these measures is unprecedented -- sanctions on North Korea ordinarily take weeks of back and forth [LINK North Korea: New U.N. Sanctions Will Not Discourage Nuclear Development] with China, North Korea's main defender, as well as consultations with Russia. U.S. Ambassador to the United Nations Nikki Haley thanked China, in particular Chinese President Xi Jinping. The new U.N. sanctions will bite deeper into the North Korean economy than those past, but fall short of the sweeping measures included in a version leaked Sept. 7....