From left, Nigerian Petroleum and Resources minister Timipre Sylva, Algerian Energy minister Mohamed Arkab, Russian Energy Minister Alexander Novak, Saudi Arabian Minister of Energy Prince Abdulaziz bin Salman Al-Saud, Venezuelan Oil Minister Manuel Quevedo, Iraqi Oil minister Thamer Ghadhban and OPEC Secretary General Mohammad Barkindo attend the joint news conference after the 7th OPEC (Organization Of Petroleum Exporting Countries) and non-OPEC meeting in Vienna, Austria.