For some time, three main titles on pricing have come to the fore. U.S. oil production and price demands, sanctions against Iran and Venezuela, and the possibility of easing the OPEC-LED supply constraint. The eyes for Iran and Venezuela will be at the G7 Leaders ' Summit, which will begin today in Canada. Iran's OPEC administrator said today: no one at OPEC would accept US sanctions against two founding members (Iran and Venezuela), and warned that oil prices could reach 140 dollars if sanction…