He graduated from Seoul National University and received a doctoral degree in government (international relations and security affairs) from Harvard University in 2002. Beginning in March 2004, Dr. Lee has been teaching international relations at Sogang University. He has published numerous articles in prestigious journals such as Security Studies, Cambridge Journal of International Affairs, and Korean Journal of Defense Analysis. Also, he has single-authored four books in Korean – After Waltz: Development and Changes in International Relations Theory after Kenneth N. Waltz, American War in Iraq: Invasion by Bush, Withdrawal by Obama, The Cuban Missile Crisis: Analysis into the Most Dangerous Moment of the Cold War, and the American War in Afghanistan: 20 Years after 9/11. In 2012, 2014, and 2022, Dr. Lee won outstanding research awards from Korea’s National Academy of Sciences for his research on the Iraq War –The American War in Iraq (2012), the Cuban Missile Crisis (2014), and the American War in Afghanistan (2022), respectively.