Zurich, January 24 (RHC)-- In the Swiss city of Zurich, Deputy foreign ministers from Iran and the United States have held a fresh round of talks over Tehran’s nuclear program. During their 2.5-hour meeting on Friday, the two sides discussed their of differences on precise issues.

Iranian Deputy Foreign Minister for Legal and International Affairs, Abbas Araqchi leads the Iranian negotiating delegation in the talks which continued on Saturday while the U.S. team is headed by Under Secretary of State for Political Affairs Wendy Sherman.

Iranian Foreign Minister Mohammad Javad Zarif, who is in Davos to attend the World Economic Forum, and U.S. Secretary of State John Kerry are scheduled to meet to discuss Tehran’s nuclear talks.

Zarif is also expected to meet his counterparts from the P5+1 group. the U.S., France, Britain, China, Russia and Germany to secure a final comprehensive deal over Tehran’s nuclear work.

Political directors from foreign ministries of Iran and the six states wrapped up talks in Geneva, Switzerland, on January 18th. Since an interim deal was agreed in Geneva in November 2013, the negotiating sides have missed two self-imposed deadlines to sign a a final agreement. Tehran and the six countries now seek to reach agreement by March 1 and to confirm the full technical details of the accord by July 1st.