4/14: Sen. Mark Kelly, Rep. Michael McCaul, NSC John Kirby, Ret. Gen. Frank McKenzie

Sen. Mark Kelly, D-Ariz.; Rep. Michael McCaul, R-Texas; White House national security spokesman John Kirby; retired Gen. Frank McKenzie, a former commander of U.S. Central Command; Kristalina Georgieva, managing director of the International Monetary Fund.