Senior Republican senators have questioned Donald Trump's choice of Rex Tillerson to be America's next secretary of state.
Senator Marco Rubio says he has "serious concerns" about the Exxon-Mobil boss, who has very close ties with Russia.
Mr Tillerson's nomination must be approved by the US Senate.
Harry Horton reports from Washington.
IN: "It's Rex Tillerson's..."
OUT: SOC
DUR: 00"42