The Sejong Institute held the Korea-US-China Trilateral Security Dialogue 2018 on the subject of “Korean Peninsula in the Era of Uncertainty” on June 15 in Jeju. The dialogue was consisted of three sessions, <Session I. Assessment of the Inter-Korean and the U.S.-North Korea Summits and Beyond>, <Session II. Challenges and Tasks of Denuclearization on the Korean Peninsula>, <Session III. Korean Peninsula and the U.S.-China Relations in the Era of Uncertainty>. The dialogue invited prominent experts, including Sejong fellows, Dr. Sanghyun Lee, Dr. Seonghyon Lee and Dr. Jaehung Cheong, Dr. Jonathan Pollack from Brookings Institution, Dr. Michael Pillsbury from the Hudson Institute, Prof. Su Hao from China Foreign Affairs University, and provided a venue to discuss security and regional issues.