Iran has discovered a new oil field in the country's south with over 50 billion barrels of crude, its president said Sunday, a find that could boost the country's proven reserves by a third as it struggles to sell energy abroad over U.S. sanctions.

Iran has discovered a new oil field in the country's south with over 50 billion barrels of crude oil, its president said Sunday, a find that could boost the country's proven reserves by a third as it struggles to sell energy abroad over U.S. sanctions.