The OPEC logo is seen outside their headquarters in Vienna, Austria, October 24, 2016. Only five of 14 non-OPEC oil producers have agreed so far to meet the group on Saturday for talks aimed at widening a deal to reduce output, casting doubt on whether OPEC will secure the full cuts it is seeking, two OPEC sources said. The Organization of the Petroleum Exporting Countries, which finalised its first oil output cut in eight years last month to prop up prices, is to hold talks with non-member countries in Vienna in the hope that they will also limit supply. The last time non-OPEC countries joined the organization in cutting output, in late 2001 as prices dropped in the aftermath of the Sept. 11 attacks, non-members promised cuts of 462,000 barrels per day, not quite the 500,000 bpd OPEC then sought. Currently, Russia has said it will cut 300,000 bpd, […]