DUBAI - Iran would negotiate on halting higher-grade uranium enrichment if given fuel for a research reactor, senior officials said, reviving a previous offer in a possible attempt to show flexibility in stalled nuclear talks with world powers.

The talks have made scant progress since resuming in April, leading to harsher Western sanctions against Iran and increasing talk of Israeli air strikes on its arch-adversary over concerns Tehran is covertly seeking the means to develop nuclear weapons.

The Islamic Republic's economy is suffering from the tightened noose of sanctions, with the rial currency losing nearly two-thirds of its value to the dollar over the past year.

"If a guarantee is provided to supply the 20 percent (enriched) fuel for the Tehran Research Reactor, our officials are ready to enter talks about 20 percent enrichment," Foreign Ministry spokesman Ramin Mehmanparast said at a Eurasian media forum in Kazakhstan on Friday, according to Iran's Press TV.

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