On June 11, 2015, the Sejong Institute invited Dr. You-ho Yul, Professor of the Korea University, and held the 5th Colloquium on the subject of “the 15th Anniversary of the 6.15 Inter-Korea Joint Declaration: Assessment and Policy Implications.” The forum was attended by Sejong research fellows, including Chairman Jun Woo Park, and President Chang Soo Jin. The participants exchanged their views on the achievements and significance of the 6.15 Joint Declaration, development issues. They also addressed issues that opinion poll exhibits as an analysis framework and discussed problems of the Park Geun-Hye Administration’s North Korea Policy.