Michael J Mazarr is a senior political scientist at the RAND Corporation. Previously he worked at the US National War College, where he was Professor and Associate Dean of Academics; and has been President of the Henry L Stimson Center; Senior Fellow at the Center for Strategic and International Studies; Senior Defence Aide on Capitol Hill; and a Special Assistant to the Chairman of the Joint Chiefs of Staff. His primary interests are US defence policy and force structure, disinformation and information manipulation, East Asian security, nuclear weapons and deterrence, and judgment and decision-making under uncertainty. Mazarr holds a PhD in public policy from the University of Maryland.