Stephen E. Biegun is a visiting instructor at the University of Michigan's Gerald R. Ford School of Public Policy and served as deputy secretary of state from 2019 to 2021. Eric S. Edelman is counselor at the Center for Strategic and Budgetary Assessments, non-resident senior fellow at the Miller Center of Public Affairs at the University of Virginia, and co-host of The Bulwark’s Shield of the Republic podcast. He served as U.S. ambassador to Finland from 1998 to 2001 and under secretary of defense for policy from 2005 to 2009. Daniel Fata is president of Fata Advisory and was deputy assistant secretary of defense for Europe and NATO Policy from 2005 to 2008. David J. Kramer is managing director for global policy at the George W. Bush Institute and was assistant secretary of state for democracy, human rights & labor from 2008 to 2009.