Yeseul Woo is the Della Ratta Fellow at the Partnership for Global Security. She is a Ph.D. candidate in the Department of War Studies at King's College London, where she also teaches on the Contemporary Security Issues module. Her research focuses on nuclear energy security, nonproliferation, and nuclear policy issues, especially in Northeast Asia.

Previously, she was a developing scholar at the Hudson Institute, a resident Lloyd and Lilian Vasey fellow at the Pacific Forum, and an  Asia-Pacific leadership fellow at the East West Center. Yeseul further worked as a journalist for media outlets in the US and South Korea.