The Saudi Oil Minister Khaled al-Faleh attends the 15th International Energy Forum in Algiers on September 27, 2016, on the eve of an informal OPEC meeting the next day. Saudi Arabia's energy minister said he was optimistic that OPEC oil ministers would reach a 'common view' on the international market at their meeting in Algiers on September 28.  (Photo by Billal Bensalem/NurPhoto via Getty Images)