Joseph F. Pilat is a program manager in the Center for National Security and International Studies at the Los Alamos National Laboratory. He served as the US Secretary of Defense’s representative to the Fourth Review Conference of the Nuclear Non-Proliferation Treaty.Nathan E. Busch is codirector of the Center for American Studies, James and Cynthia Crawford Professor of US National Security Studies, and distinguished professor of political science at Christopher Newport University.Pilat and Busch are coauthors of The Politics of Weapons Inspections: Assessing WMD Monitoring and Verification Regimes (2017) and coeditors of the Routledge Handbook of Nuclear Proliferation and Policy (2015), among other books.