The new round of talks between Iran and the 5+1 began in Vienna today with Iranian Foreign Minister Mohammad Javad Zarif heading the Iranian delegation and Catherine Ashton, the EU foreign policy chief, at the head of the 5+1 group.

Zarif and Ashton met last night over dinner to discuss the resumption of talks and the “importance of maintaining mutual respect.”

Zarif wrote on his Facebook page that this would be the last session to review important issues, with the next round potentially leading to the drafting of the final agreement.

The two sides reached an interim deal in November, which was implemented last January for a period of six months.

So far both sides are optimistic about the outcome of the talks.