Kuwait's Oil Minister Ali al-Omair speaks to journalists during the 167th ordinary meeting of OPEC (Organization of the Petroleum Exporting Countries) at OPEC's headquarters in Vienna on June 5, 2015. The OPEC oil producers' cartel was set to leave its output unchanged despite abundant supplies and low oil prices, as ministers maintain the pressure on booming US shale. AFP PHOTO /JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)
