Introduction / Tae-Hwan Kwak and Seung-Ho Joo -- North Korea's second nuclear crisis and the six-party talks / Tae-Hwan Kwak -- The Bush administration and North Korea's nuclear policy / Edward A. Olsen -- U.S. policy toward North Korea under George W. Bush : a critical appraisal / Curtis H. Martin -- China and the North Korean crisis : the diplomacy of great power transition / Jeremy Paltiel -- Japan and the second North Korean nuclear crisis / Yoshinori Kaseda -- Russia and the North Korean nuclear crisis / Seung-Ho Joo -- U.S.-North Korean negotiating behavior and the six-party talks / Scott Snyder -- Korean peninsula energy development organization (KEDO) : a bridge too far? / C. Kenneth Quinones -- The six-party talks and security cooperation in northeast Asia / Yong-Sup Han