Negotiating teams of Iran and the US held their second round of talks in one day in a bid to reduce their differences, IRNA reported.
Iranian Foreign Minister Mohammad Javad Zarif and his US counterpart Mohammad Javad Zarif presided over the talks while Iranian deputy foreign ministers Seyed Abbas Araqchi and Majid Takht-e Ravanchi as well as US Undersecretary of State Wendy Sherman and EU foreign policy deputy chief Helga Schmidt were present during the meetings.
The deputy foreign minister had met before to reduce the differences.
Head of the Atomic Energy Organization of Iran (AEOI) Ali Akbar Salehi and US Secretary of Energy Ernest Moniz also attended lengthy meeting to resolve the technical differences.