Reuters | Oil extends gains as OPEC moves to cap Nigeria output Reuters TOKYO (Reuters) - Oil prices extended gains on Tuesday after OPEC moved to cap Nigerian oil output and Saudi Arabia pledged to limit exports next month to help rein in global oversupply. London Brent crude for September delivery was up 7 cents at ... Oil rises on promise from Saudis to limit exports next month At Oil Producers' Meeting, Tough Talk Fails to Convince Markets Oil prices will be stuck below $60 through 2020, Credit Suisse forecasts |