On Wednesday, deputy secretary general of the European External Action Service announced that he held intensive talks with Iran's top nuclear negotiator in Doha.

Iran PressMiddle East: Iran's top nuclear negotiator, Ali Bagheri Kani met in Qatar with European Union mediator Enrique Mora as part of efforts to lift sanctions and revive the 2015 nuclear pact.

"I had a serious and constructive meeting with Mora in Doha. We exchanged views and discussed a range of issues including negotiations on sanctions lifting," Iranian chief nuclear negotiator Ali Bagheri Kani said on Twitter,

Mora tweeted that the Doha talks were "intense" and had touched on "a range of difficult bilateral, regional and international issues, including the way forward on the JCPOA" - the Joint Comprehensive Plan of Action, as the nuclear deal is officially called.

EU spokesperson Peter Stano said the bloc was "keeping diplomatic channels open, including through this meeting in Doha, to address all issues of concern with Iran".

Bagheri Kani said last week that he had met his British, German and French counterparts in the United Arab Emirates to discuss "a range of issues and mutual concerns".

Also the Financial Times newspaper, wrote in a report that Robert Malley the US special representative for Iran affairs, has recently met several times with Amir Saeed Irvani, the ambassador and permanent representative of Iran to the United Nations.