Wall Street Journal | Oil pulls back on US shale output jitters Financial Times Oil prices retreated on Monday, giving up some of last week's gains amid concerns that surging US shale output could undermine efforts by Opec and its allies to boost crude prices. West Texas Intermediate, the US oil marker, fell as much as 2.2 per ... OPEC Price Fight Weighs on Oil Iran: OPEC could agree in June to start easing oil output cuts in 2019 - WSJ OPEC could agree in June to start easing oil output cuts |