Arab World

FILE PHOTO: A man fixes a sign with OPEC's logo next to its headquarters' entrance before a meeting of OPEC oil ministers in Vienna, Austria, November 29, 2017. REUTERS/Heinz-Peter Bader

Exclusive: OPEC, allies struggle to fully deliver pledged oil output boost – internal document

LONDON - OPEC is struggling to add barrels to the market after agreeing in June to increase output, an internal...