IRNA � Deputy Chief of the EU foreign policy Helga Schmid, heading a delegation, is to arrive in Tehran on Sunday evening to attend the third round of talks with senior Iranian officials.

The talks between Iran's senior nuclear negotiator Abbas Araqchi and the EU deputy foreign policy chief Helga Schmid will focus on nuclear cooperation, achievements and prospects.

Araqchi, Iranian deputy foreign minister for legal affairs, Schmid and Behrouz Kamalvandi, deputy Atomic Energy Organization of Iran (AEOI) chairman for legal and parliamentary affairs, are to address the two-day talks to be held in Isfahan nuclear center.

After the announcement of 'Implementation Day' of the 2015 nuclear deal in January 2016, Iran and EU are proceeding their high-level talks, two rounds of which have already been held in Iran's capital, Tehran and Belgium's Brussels.

Energy, trade, banking cooperation, environment, counter terrorism moves and regional questions, including the Syrian, Iraqi and Yemeni crises have been among the issues on which the two sides have negotiated.