The plenary session attended by Iran and the Group 5+1 (the five permanent UN Security Council members and Germany) aims to find a final deal to end over a decade of impasse over Iran’s nuclear issue.
The talks are held at the level of experts and deputy foreign ministers.
The Iranian Deputy FMs Minister Abbas Araqchi and Majid Takht Ravanchi are leading the Iranian delegation in the talks.
Earlier the US Department of State had announced that Acting Deputy Secretary of State Wendy Sherman, Felicia Swindells, James Timbie, Kevin Veal, Newell Highsmith, Paul Irwin, Robert Malley, and Julia Jacoby form the US delegation were attending the talks.
Helga Schmid, Deputy Secretary General for the EU's External Action Service has also joined the talks.
Diplomatic delegations from Iran and the US held bilateral meetings in Geneva On Monday and Tuesday for the second consecutive day.
The Iranian delegation held meetings with the Russian and Chinese envoys earlier on Wednesday.
Iran and the Group 5+1 (also known as the P5+1 or E3+3) wrapped up a week of intensive nuclear talks in Vienna on November 24 without reaching the long-awaited deal.