Husam Zomlot, Palestinian ambassador to the U.K, says U.S. needs to be "honest mediator"

Husam Zomlot, Palestinian ambassador to the U.K, tells "Face the Nation" that the meeting between the Secretary of State Antony Blinken and Palestinian Authority President Mahmoud Abbas was "tense" and "we need to see the U.S. play the role of honest mediator."