Iran says nuclear talks with world powers to resume on Thursday..

Iran's Deputy Foreign Minister Abbas Araqchi (C) is surrounded by journalists following a press conference closing the third day of talks on Iran's nuclear programme, on November 10, 2013 in Geneva (AFP Photo/Fabrice Coffrini)

By Marcus George and Fredrik Dahl

DUBAI/VIENNA (Reuters) - Iran says it will resume expert talks with six world powers in Geneva on Thursday about how to implement a landmark nuclear agreement, a week after Tehran broke off the discussions in anger at a U.S. sanctions move.

Under the November 24 interim accord, Iran will curb its disputed nuclear program in exchange for a limited easing of sanctions that are battering its oil-dependent economy.

Technical talks - expected to involve nuclear as well as sanctions experts - will restart on December 19 and are meant to translate the political deal into a detailed plan of action for how to put it into practice.

Diplomats said the task is highly complicated but that progress was made during the last December 9-12 meeting in Vienna, even though differences remained. They said there is a real political will on both sides to carry out the agreement.

"It's in the interests of the Iranians to go quickly because there won't be an easing of sanctions until the agreement is implemented," a senior Western diplomat said.

In a sign of this, deputy Iranian chief negotiator Abbas Araqchi said the expert talks were set for an initial two days but may continue into Saturday and Sunday if required, Iran's Fars news agency said.
Last Thursday, Iranian negotiators interrupted the talks in Vienna in protest against the U.S. blacklisting of an additional 19 Iranian companies and individuals under existing sanctions, saying the move was against the deal's spirit.
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U.S. officials said the move did not violate the Geneva agreement and that they gave Iran advance warning.
The development has highlighted the sensitivities involved in implementing the agreement. Some U.S. lawmakers are pushing for further sanctions against Iran, a move which hardliners in Iran see as proof the United States cannot be trusted.

The six powers - the United States, Russia, China, Britain, France and Germany - are seeking to scale back Iran's atomic program to prevent it from developing nuclear weapons. Iran denies any such intention, saying it needs nuclear power in order to generate electricity.

The Geneva deal was designed to halt Iran's nuclear advances for six months to buy time for negotiations on a final settlement. Scope for diplomacy widened after Iran elected the pragmatic Hassan Rouhani as president in June. He had promised to reduce Tehran's isolation and win sanctions easing.

Separately, diplomats in Vienna said the U.N. nuclear agency could face costs of roughly 5 million euros ($6.9 million) as a result of its job to verify that Iran lives up to last month's agreement with the six major powers.

The 35-nation governing board of the U.N. International Atomic Energy Agency is expected to hold an extraordinary meeting next month to discuss the IAEA's expanded role in checking that Tehran meets its side of the deal, they said.

Western diplomats say Iran will receive sanctions relief once the Vienna-based IAEA verifies that it has taken the nuclear steps it has signed up to.

The IAEA's workload will increase under the Geneva deal but the additional cost is unlikely to create any major difficulty in view of the political importance of resolving the dispute.

However, diplomats accredited to the U.N. agency said it could still be sensitive as IAEA Director General Yukiya Amano likely needs both to seek member state help to pay for more inspections in Iran and find some of the money internally.

The figure of 5 million euros was a very tentative IAEA assessment. The IAEA's budget for 2014 stands at around 344 million euros.

The IAEA - tasked with preventing the spread of nuclear weapons - regularly inspects Iranian nuclear sites to make sure there is no diversion of atomic material for military purposes.

But it will step up the frequency of its visits to the uranium enrichment sites of Natanz and Fordow under the Geneva agreement and also carry out other additional tasks.

The agency has two to four staff in Iran virtually every day of the year, with some 20 dedicated to inspector activity there, but that number is now likely to rise.

(Reporting by Marcus George in Dubai; Fredrik Dahl in Vienna; Justyna Pawlak in Brussels; John Irish in Paris; editing by Alister Doyle)