Telegraph.co.uk | Opec has victory in its sights in oil price war with US shale Telegraph.co.uk A 50pc slump in the price of oil to levels well below $50 per barrel is putting pressure on higher cost producers outside Opec - which pumps about a third of the world's crude - in spiralling a price war. Opec has continued to pump over its target ... OPEC Cuts Forecast of Oil Supplies From Nonmembers in 2015 OPEC Trims 2016 Estimates for Rival Supplies as U.S. Oil Suffers OPEC sees higher demand for its oil in 2016 as rival output slows |