In five charts - How UAE's exit could affect Opec's influence over the oil price BBC‘Take the money and run': Johns Hopkins economist Steve Hanke on why the UAE quit OPEC FortuneHow 'Little Sparta' UAE shocked the Gulf by going its own way on oil NBC NewsUAE Says It Will Leave OPEC as Iran War Strains Oil Markets The New York TimesUnited Arab Emirates to quit oil cartel Opec BBC