CNBC | Oil rises on signs OPEC not prepared to boost output CNBC Oil firmed on Tuesday on signs that OPEC would not be prepared to raise output to address shrinking supplies from Iran and as Saudi Arabia signalled it was in no rush to bring prices down. Brent crude futures were up $1.14 a barrel to $79.19 a barrel ... How crude oil is traded and why the prices are on the rise In Big Win for Trump, US Sanctions Cripple Iranian Oil Exports Oil Prices Trade Slightly Lower |