Secretary of State Mike Pompeo; former Defense Secretary Jim Mattis.
NBC’s “Meet the Press” — Sens. Chris Murphy, D-Conn., and Pat Toomey, R-Pa.
CBS’ “Face the Nation” — Pompeo; former Secretary of State John Kerry.
CNN’s “State of the Union” — Treasury Secretary Steven Mnuchin; Reps. Adam Schiff, D-Calif., and Ben Ray Lujan, D-N.M.