Daeun Choi is a Research Associate at the Center for Foreign Policy and National Security at the Asan Institute for Policy Studies. Previously she worked as a Diplomacy research development associate at Youthplomacy and a human rights analyst at the Database Center for North Korean Human Rights. She also supported city-diplomacy activities at the Seoul Institue after undertaking a political internship at the EU Delegation to the Republic of Korea. Her research interests are security and foreign policy of the Asia-Pacific, inter-Korean relations, geopolitical issues, and ROK defense strategy, US-ROK alliance, extended deterrence.

She participated in the thesis contest and speech contest held by the Ministry of Foreign Affairs and the Ministry of Unification, winning the third prize and the first prize. She presented her bachelor's dissertation on panel #1: The International Politics of Security at the second Politics and International Undergraduate Research Conference in the UK (2015). She has published several papers related to these areas of research: A South Korean Soft Power Initiative: What Lies Behind the Korean Wave (Youthplomacy, 2023), Unity through Confrontation: What Yoon Suk-Yeol's Presidency Means for Inter-Korean Relations (Youthplomacy, 2022), Japan's Foreign Policy on Postwar Issues Relating to South Korea (Pacific Focus, 2018).

Her Bachelor's dissertation titled "Why is Japanese Prime Minister Abe Shinzo's goal to revise Article 9 of the Peace Constitution escalating regional tension now?", and her master's thesis analyzed China's rising military power through international relations theory.