Seth Cropsey is the founder and president of Yorktown Institute. He served as a naval officer and as Deputy Undersecretary of the Navy. He has authored two books on U.S. naval power, Mayday: The Decline of American Naval Supremacy (2014) and Seablindness: How Political Neglect Is Choking American Seapower and What to Do About It (2017). He is a member of the Naval War College Press Advisory Board and publishes frequently on strategy and U.S. foreign policy in major media outlets, including the Wall Street Journal. Cropsey lives in Bethesda, MD.

Harry Halem is Senior Fellow at Yorktown Institute, Senior Fellow in Defense at the London-based Policy Exchange, and a Younger Generation Leader in Euro-Atlantic Security. He holds an MA in philosophy and international relations from the University of St Andrews, an MSc in political theory from the London School of Economics (LSE), and is a doctoral candidate in international relations at LSE. He frequently advises financial institutions on defense technology and future warfare and often works on Eastern European operational and strategic questions. He has published in noted military-focused outlets like Parameters and Military Strategy magazine. Halem lives in London.