FILE PHOTO: Russian Energy Minister Novak, Saudi Arabia’s Oil Minister al-Falih and OPEC Secretary General Barkindo address a news conference after an OPEC meeting in Vienna

FILE PHOTO: Russian Energy Minister Novak, Saudi Arabia’s Oil Minister al-Falih and OPEC Secretary General Barkindo address a news conference after an OPEC meeting in Vienna

Russian Energy Minister Alexander Novak, Saudi Arabia’s Oil Minister Khalid al-Falih and OPEC Secretary General Mohammad Barkindo address a news conference after an OPEC meeting in Vienna, Austria, November 30, 2017. REUTERS/Heinz-Peter Bader/File Photo