Reuters | Oil slips on OPEC deal uncertainty and rising US inventories Reuters Oil ministers from the Organization of the Petroleum Exporting Countries and other producers began gathering in Vienna on Wednesday to discuss extending a deal that has so far reduced crude oil production by 1.8 million barrels per day (bpd) and helped ... How OPEC could make Russia happier about extending the oil output cut Opec returns to 'Goldilocks' debate over oil price Oil Prices Slip After API Reports Small Build In Crude Inventories |