China and the United States have cooperated closely in resolving the second North Korean nuclear crisis. China and the United States have worked together with South Korea,Russia and Japan to prevent the North Korean nuclear issue from spiraling out of control,and they have also tried to make progress in the six-party talks.Despite differences over the issue,both sides are maintaining the momentum of cooperation with increasing mutual understanding and trust.The current U.S.-North Korea rapprochement has progressed quickly,adding a new factor in Sino-U.S.cooperation.Apart from bilateral contact with North Korea,the United States is insisting on a multilateral approach,continuing to persuade China to share responsibility for a nuclear-free Peninsula,and jointly advancing the process in the second phase set forth in the February 13 Agreement on Initial Actions.China’s role, therefore,remains indispensable.