Reuters | Oil falls on doubts over extending output cuts, surprise rise in US crude stocks Reuters Oil prices have received a broad lift this year, with Brent up by 40 percent since mid-2017, due to an effort by the Organization of the Petroleum Exporting Countries (OPEC) and a group of other producers, led by Russia, to withhold 1.8 million barrels ... Opec returns to 'Goldilocks' debate over oil price OPEC Leader Cites 'New Optimism' With Oil Prices on the Rise Oil Prices Slip After API Reports Small Build In Crude Inventories |