Scholars from China, America, Japan and South Korea attended the academic seminar entitled “China-U.S. Relations and the Northeast Asian Security in the Obama Era” and co-organized by Shanghai Institutes for International Studies(SIIS), University of North Korean Studies and the Institute for Far Eastern Studies, Kyungnam University and Woodrow Wilson International Center for Scholars. The participants had a heated discussion on the China-U.S. Relations, DPRK nuclear crisis, and Northeast Asian security cooperation in the Obama era and they found themselves understand and cooperate with each other further.