With the election of Hassan Rohani as president of Iran in 2013 and the nuclear dispute settlement between Iran and the E3+3 being under way, the Arabic-Iranian relationship has experienced a break with tradition. The time has come for the Gulf Cooperation Council to agree on a joint foreign policy towards Iran – a challenge considering the Gulf States’ particular national interests and the diverging signals coming from the two regional big players Saudia Arabia and the United States.