TEHRAN, May 16 (Xinhua) -- Iran and the world powers have failed to reach their objectives in the just-ended nuclear talks which are expected to start drafting a final agreement on Iran's nuclear program, senior Iranian nuclear negotiator Abbas Araqchi said in Vienna on Friday.
"The objective of this round of (nuclear) talks was to go into details and start drafting the comprehensive agreement, but the differences were so wide that we couldn't start writing the text," Araqchi said
The talks' atmosphere was "very serious and without tension," but the negotiations "failed to reach a specific conclusion and there was no progress," he added.
The Iranian official also said that it does not mean the talks have reached a dead end, as the parties involved are "determined to continue the talks, and the duration of the negotiations can be extended for another six months."
Iran and the P5+1 group, Britain, China, France, Russia and the United States plus Germany, concluded their three days of intensive talks in Vienna on Friday. The parties could not narrow their differences to start drafting a comprehensive nuclear deal.
Iran and the P5+1 group clinched a six-month interim deal in Geneva last November, in which Iran agreed to cap its nuclear program in exchange for easing some financial sanctions against it. The Geneva deal took effect on January 20.