The flag of OPEC stands on a desk ahead of the 174th Organization Of Petroleum Exporting Countries (OPEC) meeting in Vienna, Austria, on Friday, June 22, 2018. OPEC and its allies reached a preliminary agreement in the face of strong opposition from Iran to boost production by a theoretical 1 million barrels a day - the actual increase will be smaller as several countries are unable to raise output. Photographer: Stefan Wermuth/Bloomberg via Getty Images
