On March 24, 2021, the 4th Brown bag Seminar was held at Keimyung University Institute of International Studies. This seminar was held under the theme of two views on denuclearization: denuclearization of the Korean Peninsula VS denuclearization of North Korea. The lecture was given by Choi Wan-kyu, a former president of North Korea Graduate School, and was held at the joint studio of the College of Music and Performing Arts, No. 423. Through the seminar, students were able to explore what South Korea, the United States and North Korea think of denuclearization and think about the gradual peace process through the unification of opinions.