OPEC Secretary General Mohammed Barkindo of Nigeria attends a meeting of the Organization of the Petroleum Exporting Countries, OPEC, at the OPEC headquarters in Vienna, Austria on November 30, 2016. Read more
OPEC Secretary General Mohammed Barkindo of Nigeria attends a meeting of the Organization of the Petroleum Exporting Countries, OPEC, at the OPEC headquarters in Vienna, Austria on November 30, 2016. Read more