Hurriyet Daily News | Return of Iran oil may cause more Opec tensions gulfnews.com London: The return of oil from Iran following the landmark nuclear energy deal with world powers could create fresh tensions within Opec but may reinforce the organisation's output strategy, analysts say. Tehran and major powers — Britain, China ... Return of Iranian oil may cause more OPEC tensions: Analysts Return of Iranian oil may cause more OPEC tensions Iran's return to oil market won't have big effect, shale will – Russian energy ... |