Reuters | Oil prices turn negative on worries over OPEC output cut Reuters NEW YORK Oil turned negative in volatile trade on Tuesday on worries Iran and Iraq were not ready to agree on an OPEC output freeze after prices earlier rose to the highest level this month on reports cartel members had overcome their internal disputes. Oil prices slump as OPEC output talks reportedly hit snag Oil Prices Down on Uncertainty Ahead of OPEC Meeting Oil Falls as OPEC Said to Defer Iranian, Iraqi Output Cut Talks |