Rex Tillerson (C), former chairman and chief executive officer of Exxon Mobil, arrives between Senators' Bob Corker (L) (R-TN) and Ben Cardin (2NDR) (D-MD) prior to testifying before a Senate Foreign Relations Committee confirmation hearing on his nomination to be U.S. secretary of state, on Capitol Hill in Washington, U.S. January 11, 2017. REUTERS/Kevin Lamarque