Lausanne, March 31, IRNA - The third round of ministerial meeting between Iran and the Group 5+1 kicked off in the Swiss city of Lausanne Tuesday afternoon.
European Union foreign policy Chief Federica Mogherini is also present in the meeting.
It is expected that the ministers of seven countries would finalize talks this day.
A close source to Iran's nuclear negotiating team said on Tuesday that they will try to conclude talks even they last until overnight.