Saudi Arabian Oil Minister Ali al-Naimi, the architect of the 2014 switch in Organisation of the Petroleum Exporting Countries (Opec) policy that has since roiled the energy market, companies and entire economies from Mexico to Nigeria, is leaving his post. An 80-year-old who rose from modest Bedouin roots, Mr al-Naimi headed the ministry for almost … Continue reading End of an era as Saudi king dismisses oil veteran