On April 11, 2023, the Sejong Institute held a webinar with the Hudson Institute on the theme of "Chinese Nuclear Weapons Development: Issues and Perspectives of International Community" in the Sejong Institute. 

The webinar was presented by Lee Sang-hyun, President of the Sejong Institute, Richard Weitz at Hudson Institute, Youngjun Kim at National Defense University, Woo Yeseul at Kings College London, Komei Isozaki at Hudson Institute, and Maximilian Hoell from European Leadership Network.​