Iran’s Supreme Leader Ayatollah Ali Khamenei told military commanders yesterday the US had created the “myth” of nuclear weapons to portray Iran as a threat, hardening his rhetoric before nuclear negotiations resume this week.

Khamenei, the highest authority in Iran, has supported the talks but continues to express deep mistrust of the US.

“They created the myth of nuclear weapons so they could say the Islamic Republic is a source of threat. No, the source of threat is America itself, with its unrestrained, destabilising interventions,” Khamenei said in a televised address to a hall of several hundred military commanders.

“The other side is methodically and shamelessly threatening us militarily... even if they did not make these overt threats, we would have to be prepared,” he said.

Political leaders in Iran and the US have to contend with domestic constituencies sceptical about the outcome of the talks, and Khamenei’s comments did not appear to suggest he has withdrawn his cautious support for the diplomatic process.

Any inspections of military sites are a national humiliation

Iran and six world powers, including the US, reached a framework accord on Iran’s disputed nuclear programme this month and will resume negotiations in Vienna this week, aiming to reach a final deal by the end of June.

The accord was a step towards a settlement that would allay Western fears that Iran could build an atomic bomb, with economic sanctions on Tehran being lifted in return.

Despite significant progress, the two sides still disagree on several issues, including how quickly international sanctions would be lifted under a final deal. Earlier this month, Khamenei insisted that all sanctions be lifted immediately on a deal being reached, a condition that the US State Department dismissed. He warned of the “devilish” intentions of the US, even as he reaffirmed his support for Iran’s negotiating team.

The deputy commander of the powerful Islamic Revolutionary Guards Corps (IRGC) yesterday rejected any inspections of military sites as a “national humiliation”, highlighting another area of difference between the two sides.

“This subject is treasonous and selling out the country, and if anyone speaks of it, we will respond with hot lead,” Hossein Salami said in comments cited by state news agency Irna. Last week, US Defence Secretary Ash Carter said a final nuclear agreement must include inspections of Iranian military sites. Khamenei had earlier said military sites could not be inspected.

Khamenei also criticised US support for a Saudi-led offensive in Yemen, where a coalition of Arab countries is bombing Iran-allied Houthi rebels who seized the capital Sanaa last year and took control of other parts of the country.

The four-week-old campaign, in which Iran and Western countries have backed opposite sides, began during the last round of nuclear talks. Growing civilian casualties and Western suspicions that Iran is arming the Houthis have added to tensions.

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