TEHRAN: Iran and world powers are set to resume talks Thursday on activating a landmark nuclear deal to rein in Tehran´s nuclear programme, with Iranian Foreign Minister Mohammad Javad Zarif voicing optimism.

Iran´s top nuclear negotiator said Wednesday that negotiations were progressing amid "strong political will", on the eve of the resumption of the Geneva talks aimed at putting into action an interim nuclear deal clinched in November.

"The nuclear talks are continuing with seriousness and a strong political will," Zarif said on his Facebook page, adding that hours of technical talks with experts from the so-called P5+1 group of world powers in December had produced "positive results".

On Thursday his deputy, Abbas Araqchi, will meet Helga Schmid, deputy to EU foreign policy chief Catherine Ashton whose office represents the P5+1 group of world powers in the decade-long negotiations with Tehran.

Their talks are due to last for two days.

The US State Department confirmed Wednesday that US Under Secretary of State for Political Affairs Wendy Sherman was also travelling to Geneva to attend the talks.

She would meet with both Araqchi and Schmid, the State Department said in a statement, without confirming reports from Iranian news agencies that there would be a three-way meeting.

Iranian foreign ministry spokeswoman Marzieh Afkham said the talks will focus on remaining issues "pending a political decision" before the deal can go into effect on January 20, a date mooted by both sides.

Technical experts from Iran and the EU-chaired P5+1 -- comprising the United States, China, Russia, Britain, France and Germany -- held two sessions in Geneva in mid and late December as they seek to fine-tune a deal reached on November 24 after their foreign ministers rushed to the Swiss city for marathon talks.

Under the deal, Iran is to curb parts of its nuclear drive for six months in exchange for modest relief from international sanctions and a promise by Western powers not to impose new measures against the Iranian economy, which has been battered by the embargo.

SOURCE: AFP