Aziz Akbarain underscored that nuclear issue is the only topic of discussions between Tehran and the Group5+1 (the US, Britain, France, Russia and China plus Germany).
In November 2013, the two sides signed an interim nuclear deal in the Swiss city of Geneva that came into force on January 20. The deadline for attaining a final deal is July 20.
Iran and the six world powers last met in their fourth round of talks in Vienna on May 14-16. Since the November deal, the seven nations have been discussing ways to iron out differences and start drafting a final deal that would end the West’s dispute with Iran over the country’s nuclear energy program.
Iran said there has been no tangible progress in writing the draft text of the agreement and it blamed the US for the failure, saying Washington has made excessive demands beyond the agreements made in the previous rounds of talks.