(VOVworld) – World oil prices fell for a third straight session on Tuesday as a deal on Iran’s nuclear program between Iran and 6 world powers appeared likely to lift a ban on Iran’s oil exports.

A general view shows oil treatment facilities at Vankorskoye oil field, north of the Russian Siberian city of Krasnoyarsk. (Photo: Reuters)

North Sea Brent crude dropped 1.18 USD (2.1%) to 55.11 USD a barrel. In March, it went down 12%. US light sweet crude finished down 1.08 USD (2.2%) at 47.60 USD a barrel. It lost more than 7% in the past three sessions.