Agreement on the sanctions may signal a new level of cooperation between the U.S. and China under incoming President Xi Jinping, who’s looking for a stable relationship with the U.S. as China’s economic and political power grows in Asia, said Patrick Cronin, director of the Asia-Pacific Security Program at the Center for a New American Security in Washington.
http://www.bloomberg.com/news/2013-03-07/china-u-s-accord-sets-un-vote-on-north-korea-sanctions.html