Iran’s Supreme Leader Ayatollah Ali Khamenei. Photo: ReutersIran’s Supreme Leader Ayatollah Ali Khamenei. Photo: Reuters

Supreme Leader Ayatollah Ali Khamenei yesterday approved the Iranian government’s nuclear deal with world powers but said Tehran should not give up core elements of its atomic programme until allegations of past military dimensions had been settled.

In a letter to President Hassan Rouhani, whose pragmatist approach opened the door to nuclear diplomacy with the West, Ayatollah Khamenei ordered the July 14 agreement to be implemented, subject to certain security conditions the Iranian Parliament stipulated in a law passed last week.

Under the Vienna agreement, Iran is to curb sensitive parts of its nuclear programme to help ensure it cannot be diverted into developing bombs, in exchange for a removal of sanctions that have isolated the Islamic Republic and hobbled its economy.

Ayatolllah Khamenei’s green light was the last procedural hurdle to carrying out a deal that ended a decade-long stand-off which raised fears of a wider Middle East war.

But the Supreme Leader has ruled out any detente with the West beyond the nuclear deal, and he said Iran would stop implementing it if the six powers – the United States, Britain, France, Germany China and Russia – imposed any new sanctions.

“Any comments suggesting the sanctions structure will remain in place or new sanctions will be imposed, at any level and under any pretext, would be considered by Iran a violation of the deal,” Ayatollah Khamenei said in the letter published on his website. He said implementation of the deal should be “tightly controlled and monitored” because of some “ambiguities” in it.

“Lack of tight control could bring significant damage for the present and the future of the country,” he said, while praising the efforts of Mr Rouhani’s negotiating team. The US and the EU took formal legal steps on Sunday that will rescind sanctions once Iran meets certain conditions such as reducing the number of centrifuges used to enrich uranium, and its enriched-uranium stockpile.

Until UN inspectors settle the issue, Iran should delay sending its stockpile of enriched uranium abroad

Another condition will be a resolution of a UN nuclear watchdog inquiry into whether Iran conducted atom bomb research at a military complex in the past – “possible military dimensions (PMD)” to the programme, as the agency terms it.

On that point, Ayatollah Khamenei said that until UN inspectors settled the PMD issue, Iran should delay sending its stockpile of enriched uranium abroad and reconfiguring a heavy water reactor to ensure it cannot make bomb-grade plutonium.

Iran has long denied covertly researching bombs and says its nuclear programme has always been for civilian energy purposes.

“Any action regarding Arak reactor and dispatching uranium abroad will take place after the PMD [possible military dimensions] file is closed,” Ayatollah Khamenei said in the letter.

Iran agreed with the powers to fill the Arak reactor’s core with concrete so that it could not yield plutonium, which along with highly enriched uranium constitutes the standard fuel for nuclear bombs.

Iran is also required to export more than 90 per cent of its refined uranium stocks, keeping just 300kg of the material enriched to 3.67 per cent fissile purity – suitable for running civilian nuclear power plants – for 15 years.

Since the deal was struck, Ayatollah Khamenei, who holds together Iran’s multi-tiered, faction-ridden power structure, has ruled out normalising relations with the US, overriding Mr Rouhani’s expressed wish to pursue further areas of cooperation.

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