CNBC | Oil falls as Saudi Arabia says it will play 'responsible role' CNBC Oil prices fell on Tuesday after Saudi Arabia said it would play a "responsible role" in energy markets, although sentiment remained nervous ahead of new U.S. sanctions on Iran's crude exports that start next month. Benchmark Brent crude oil was down ... Oil Closes Below $70 for Fourth Session as Stockpiles Accumulate Oil steady as Saudi Arabia pledges to play 'responsible role' in market Iran's oil minister says US sanctions cannot stop crude exports |