FILE - In this April 6, 2018 file photo, a former farmer works at a primitive refinery as he makes crude oil into diesel and other products, in Rmeilan, Hassakeh province, Syria. Ministers from the Organization of the Petroleum Exporting Countries and non-OPEC nations led by Russia meet in Vienna on Friday, June 22 and Saturday, June 23. (AP Photo/Hussein Malla, File)
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