Saudi Arabia plans to host a leaders’ oil summit later this year for OPEC and non-OPEC countries participating in a supply cut pact, two sources familiar with the matter said on Friday. Riyadh and Moscow took the first step in institutionalizing the long-term framework for co-operation between OPEC and non-OPEC nations this week, the sources said. Related Coverage Russia, Saudi Arabia agree OPEC+ format should be extended Saudi Crown Prince Mohammed bin Salman met President Vladimir Putin at the Kremlin. Russia and Saudi Arabia played the opening match of the soccer World Cup, which Russia is hosting. Russian President Vladimir Putin shakes hands with Saudi Crown Prince Mohammed bin Salman during their meeting at the Kremlin in Moscow, Russia June 14, 2018. […]