Dr. Hayoun Ryou-Ellison

Assistant Professor

Hayoun Ryou-Ellison serves as Assistant Professor in the College of International Security Affairs at National Defense University.

Before coming to NDU in Spring 2024, she taught at Howard University, the Catholic University of America, and Virginia Commonwealth University. She was a nonresident fellow at the Kora Institute for Maritime Strategy (KIMS) from 2022-2024. Previously, she worked in New Delhi, India, where was an associate fellow at the Observer Research Foundation, a visiting fellow at the Institute of Peace and Conflict Studies, and a visiting scholar at the Institute for Defence Studies and Analyses.


  • PhD: Political Science, University of Tennessee, Knoxville
  • MS: Statistics, University of Tennessee, Knoxville
  • MA: Political Science, The George Washington University
  • MA: China Area Studies, Seoul National University
  • BA: Chinese, Hankuk University of Foreign Studies
  • Diploma: Korea Maritime Institute’s Yeosu Academy of the Law of the Sea
  • Certificate: National Security Law, University of Virginia School of Law

Areas of Expertise

  • Korean Peninsula, China, India, and the Indo-Pacific region
  • International relations of East Asia
  • Maritime conflicts and security in East Asia
  • Regional security in the Indo-Pacific
  • Irregular warfare


Kraska, James, and Hayoun Ryou-Ellison, eds. Global North-South Cultural Influence on the Law of the Sea (forthcoming).

Journal Articles

1. Ryou-Ellison, Hayoun Jessie, and Gurpreet Khurana. “Indo-Pacific Strategy versus Belt and Road Initiative: Implications for Hegemony in Asia.” Maritime Security 2, no.1 (Summer 2021): 71–123. https://koreascience.kr/article/JAKO202118752894736.page.

2. Hwang, Wonjae, and Hayoun Jessie Ryou-Ellison. “Taking a Side Between the United States and the People’s Republic of China: Strategic Hedging of South Korea and India.” International Area Studies Review 24, no. 2 (June 2021): 60–78. https://journals.sagepub.com/doi/full/10.1177/22338659211013650.

3. Wiegand, Krista, and Hayoun Jessie Ryou-Ellison. “US and Chinese Strategies, International Law, and the South China Sea.” Journal of Peace and War Studies, 2nd ed. (October 2020): 49–68. https://www.researchgate.net/profile/Yangmo-Ku/publication/344692584_On_the_Path_to_Conflict_Scrutinizing_US-China_Rivalry/links/5f89bd9e299bf1b53e2c2181/On-the-Path-to-Conflict-Scrutinizing-US-China-Rivalry.pdf#page=55.

4. Ryou-Ellison, Hayoun Jessie, and Aaron Gold. “Moral Hazard at Sea: How Alliances Actually Increase Low-Level Maritime Provocations Between Allies.” International Interactions 46, no. 1 (January 2020): 111–132. https://www.tandfonline.com/doi/abs/10.1080/03050629.2020.1688804.

Other Publications

Khurana, Gurpreet, and Hayoun Ryou-Ellison, KIMS Maritime Domain Awareness Project: Comparative Study Proposal for South Korea, no. 2022-15, Policy Report Series, Korea Institute for Maritime Strategy. https://kims.or.kr/publication/policy-report/kims-mda-project/.

Book Review

Ryou-Ellison, Hayoun. "Book Review: The China Alternative: Changing Regional Order in the Pacific Islands." Journal of Pacific History 59. Published ahead of print, 2023. https://www.tandfonline.com/doi/full/10.1080/00223344.2023.2241164.