A table with OPEC logo is seen during the presentation of OPEC’s 2013 World Oil Outlook in Vienna , in this November 7, 2013 file photo. REUTERS/Leonhard Foeger
A table with OPEC logo is seen during the presentation of OPEC’s 2013 World Oil Outlook in Vienna , in this November 7, 2013 file photo. REUTERS/Leonhard Foeger