Business Insider | Return of Iranian oil may cause more OPEC tensions Business Insider London (AFP) - 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 cartel's output strategy, analysts say. Tehran and major powers -- Britain, China ... Return of Iranian oil may cause more OPEC tensions: Analysts Iran factor in oil's search for a bottom level Iran deal exacerbates Norway's oil risks as supply to swell |