UPDATE 3-UN nuclear watchdog eyes Iran deal, Parchin visit
* U.N. nuclear inspectors hope for military site access in Iran
* Iran says Parchin has "nothing" to do with nuclear programme
* World powers will watch IAEA-meeting closely
* Growing concern Iran nuclear stand-off could lead to war
By Fredrik Dahl
VIENNA, Jan 15 (Reuters) - The U.N. nuclear watchdog said on Tuesday it hoped to gain long-sought access to the Parchin military site during a visit to Iran this week aimed at unblocking its investigation into suspected atom bomb research in the Islamic state.
The International Atomic Energy Agency will seek to nail down a framework deal with Iran in Wednesday's talks in Tehran that would enable it to relaunch its inquiry, IAEA Deputy Director General Herman Nackaerts said.
"We are approaching these talks in a constructive spirit ... and we trust that Iran will work with us in the same spirit," he said at Vienna airport before his team departed for Tehran for a new round of what have long been fruitless negotiations.
World powers striving to resolve a decade-old dispute over Iran's atomic work and avert the threat of a new Middle East war will scrutinise the IAEA-Iran talks for any indication of an Iranian readiness to finally start addressing their concerns.
The six powers - the United States, France, Germany, China, Russia and Britain - and Iran may later in January resume their separate negotiations to try and reach a broader diplomatic settlement. They last met in June.
Israel - a U.S. ally believed to have the Middle East's only nuclear arsenal - has threatened military action if diplomacy and economic sanctions intended to rein in Iran's uranium enrichment programme do not resolve the stand-off.
Iran, a major oil producer, says its nuclear work is an entirely peaceful project to generate an alternative source of energy for a rapidly expanding population.
The IAEA, whose mission it is to prevent the spread of nuclear weapons in the world, has been trying for a year to negotiate a so-called structured approach with Tehran that would give it access to sites, officials and documents in Iran.
The agency said after a previous meeting with Iran in mid-December that progress had been made and that it expected to conclude the agreement in the January talks.
"We are aiming to finalise the structured approach to resolving the outstanding issues on the possible military dimensions of Iran's nuclear programme," Nackaerts said.
Western diplomats were sceptical of the prospects for a breakthrough in view of what they see as years of Iranian stonewalling of the IAEA's concerns. Even if there were a deal, it remained to be seen how it would be implemented, they said.
Asked if there was any reason for optimism about this week's talks, one Western envoy said: "None that I'm aware of."
The IAEA's immediate priority is to visit the Parchin military facility southeast of Tehran, where it suspects explosives tests relevant for production of nuclear weapons may have taken place, perhaps a decade ago.
Iran denies the allegations and has so far denied access, despite repeated IAEA requests over the last year.
"We hope that we will be allowed to go to Parchin and if access is granted we will welcome the chance to do so," Nackaerts said. "We are ready to go."
IRAN STRESSES ITS NUCLEAR "RIGHTS"
Some members of the IAEA team were carrying metallic cases, apparently with equipment they would need to inspect Parchin for any traces of illicit nuclear-related activity there.
Western diplomats say Iran has worked for the past year to cleanse Parchin of any incriminating evidence, but IAEA chief Yukiya Amano said late last year a visit would still be useful.
Iran, which rejects accusations of a covert bid to develop the means and technologies needed to produce nuclear arms, says it must first reach a framework accord with the IAEA on how the inquiry should be done before allowing any Parchin visit.
It says Parchin is a conventional military facility and has dismissed accusations that it is "sanitising" the premises.
Parchin "has nothing to do with nuclear activities," Foreign Ministry spokesman Ramin Mehmanparast said in Tehran.
Iran is ready to remove "any ambiguities" over its nuclear programme, state television quoted him as saying. But he also appeared to link this to what he called a recognition of Iran's nuclear "rights", meaning work including uranium enrichment.
Washington says Iran does not automatically have the right to refine uranium under international law because, it argues, Tehran in the past concealed sensitive nuclear activity contrary to its safeguards agreement with the IAEA.
Enriched uranium can fuel nuclear power plants, Iran's declared goal, but also provide material for bombs if refined further, which the West suspects is Tehran's ultimate ambition.
A report by U.S. nonproliferation experts this week said Iran could produce enough weapon-grade uranium for one or more nuclear bombs by mid-2014, and that Washington and its allies should intensify sanctions.
Analysts and diplomats see a window of opportunity for world powers to make a renewed diplomatic push to find an overall negotiated solution to the dispute after U.S. President Barack Obama won re-election in November.
The six powers want Iran to scale back its uranium enrichment programme and cooperate fully with the IAEA. Iran wants the West to first lift sanctions hurting its economy.
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