Possible Arak compromise seen bolstering confidence in Iran talks

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Iran and six world powers are closer to agreement on possible technical modifications for the uncompleted Arak reactor that would greatly reduce proliferation concerns, bolstering negotiators’ confidence as they try to reach a final nuclear deal by July 20th, Iranian and US non-proliferation experts briefed on the discussions said.

The Arak issue “is almost solved,” Seyed Hossein Mousavian, a former Iranian nuclear negotiator now at Princeton University, told Al-Monitor Tuesday.

“I think Arak has been the big area where there has been a narrowing” of differences between Iran and the P5+1, Mark Fitzpatrick, a former State Department nonproliferation official, now with the International Institute for Strategic Studies (IISS) in London, told Al-Monitor Tuesday.

“Both sides are being positive in their remarks,” Fitzpatrick said. “Part of this positive spin [is that] they are reaching a solution to Arak.”

The possible compromise framework, Mousavian said, is “almost the same” as a plan proposed by a team of Princeton University nuclear experts led by Frank von Hippel in an article entitled ‘A Win-Win Solution on Iran’s Arak reactor,’ that was published this month by Arms Control Today.

“I believe Tehran and the US both agree this framework can work to resolve” the matter, Mousavian said.

Under the plan proposed by von Hippel and colleagues, “the amount of plutonium produced in the Arak reactor could be reduced drastically” by converting “the reactor from using natural uranium fuel to low-enriched uranium fuel,” they write. “With low-enriched fuel, the power could be reduced to 20 or even 10 MWt,” from the reactor’s currently-planned 40-Mwt design, “further reducing plutonium production,” they write.

Their redesign proposals “would reduce plutonium production to less than 1 kilogram per year, comparable to the reduction that would be accomplished by replacing the Arak reactor with a light-water research reactor,” the authors write.

“At the same time, these redesigns would not reduce the usefulness of the reactor for making radioisotopes and conducting research,” they wrote. “Thus, this approach would meet Iran’s needs and would address the concerns of the international community.”

Such modifications, that would “reduce the overall power level of the reactor, and thus decrease the amount of plutonium available in the spent fuel it yields, would indeed significantly reduce the proliferation threat,” Jofi Joseph, a former US government Iran non-proliferation expert said.

“However, this compromise could still run into political opposition from Israel, Gulf States, and the U.S. Congress,” Joseph added, because it still “allows Arak to remain a heavy water moderated reactor. …[which] is not necessary for the production of medical isotopes.”

Mousavian estimated that about 60-70% of the issues for a final nuclear deal may be tentatively agreed or nearly agreed–a slightly more upbeat estimate than the 50-60% offered by Iranian Foreign Minister Mohammad Javad Zarif at nuclear talks in Vienna earlier this month.

US negotiators have previously said that no issue is agreed until all of the issues are agreed, and have compared the complex negotiations to a Rubik’s cube.

Among the outstanding issues still to be resolved are Fordo and the overall size of Iran’s enrichment program and the duration of limitations on its size, experts said.

Former State Department arms control advisor Robert Einhorn, in a paper published by the Brookings Institution last month, proposed that Fordo be converted into a Research & Development facility. He also proposed that Iran and the P5+1 could arrive at a compromise on the size of Iran’s enrichment program by defining its practical needs, which are limited in the medium term.

(Photo: This Aug. 26, 2006 file photo shows an aerial view of a heavy-water production plant in the central Iranian town of Arak. AP Photo/ ISNA, Arash Khamoushi, File)