CNBC | Rex Tillerson's firing raises doubts about the Iran nuclear deal and injects uncertainty into oil markets CNBC The staff shakeup installs an ardent critic of the Iran nuclear deal as the nation's top diplomat and narrows the difference of opinion between the White House and the State Department, analysts say. Tillerson's firing also removes another member of ... Tillerson Has 180 Million Reasons Not to Return to Oil Industry How the Boy Scouts, Texas and an oil giant shaped Rex Tillerson How Tillerson's Firing Could Boost Oil Prices |