On May 19, 2015, the Sejong Institute held the 4th Colloquium under the title of the “Reshuffling of the Northeast Asian Order after the US-Japan Summit Talks” and “Strengthening of the US-Japan Alliance and Changes in Northeast Asian Affairs.” Dr. Sang Hyun Lee, Dr. Myon-woo Lee, and Dr. Soung-chul Kim gave presentation on the subject. The discussion was held over breakfast and attended by President Chang Soo Jin, Vice President Un-chul Yang, and senior researchers including Dr. Soung-chul Kim, Dae-woo Lee, Jong-seok Lee, Tai-Hwan Lee, Eunsook Chung, and Hyun-ik Hong.