Iranian chief nuclear negotiator made the remarks upon arrival in the Austrian capital city of Vienna on Monday.
Zarif also emphasized that the five-day talks will exclusively cover the nuclear issue.
He described this phase of diplomacy as serious and underscored that “Tehran will not move beyond its redlines.”
Zarif also said there is enough time for the two sides to finalize a nuclear deal.
He added that he would have a working lunch with the European Union Foreign Policy Chief Catherin Ashton before the American negotiators join them in a trilateral meeting.
The Deputy Foreign Minister for Legal and International Affairs Seyed Abbas Araqchi will head the Iranian delegations in this week’s negotiations which will be attended by Ashton’s Deputy Helga Schmid, and the US representatives Nicolas Burns, Wendy Sherman, and the US Vice President National Security Adviser Jake Sullivan.
Iranian negotiating team is in Vienna to hold the fifth round of the nuclear negotiations with the sextet. This round of talks is aimed at drafting a comprehensive deal to settle the decade-long standoff over Tehran’s nuclear energy program.
Iran and the Group 5+1 (alternatively known as the P5+1 or E3+3) inked an interim deal on Tehran’s nuclear program in Geneva last November, which came into force on January 20.