Iran's supreme leader has accused the West of lying about his country's nuclear plans in order to cover up their own problems and warned Israel that any attack on his country would be answered with a "thunderous blow".
In an address on Sunday to mark the 23rd anniversary of the death of his predecessor Ruhollah Khomeini, Ayatollah Ali Khamenei gave no indication he was ready to compromise on Iran’s nuclear programme in talks with world powers.
"What Americans and westerners do is idiotic. They magnify the nuclear issue to cover up their own problems," Khamenei said, referring to the economic gloom in the US and Europe.
"They are deceitfully using the term nuclear weapons."
During his address, Khamenei said that sanctions were not hampering Iran and were "deepening Iran's hatred towards the West".
Israeli talk of military strikes showed it felt vulnerable after the fall of former Egyptian President Hosni Mubarak, a US and western ally, last year, Khamenei said.
"If they take any miscalculated action, they will receive a thunderous blow."
On Saturday a senior military commander said Iranian missiles could reach all parts of Israel and threatened US bases in the region if Iran was attacked.
While Iranian officials maintain a defiant tone, Iran has returned to talks with world powers after the West severely tightened sanctions, targeting its oil exports and isolating its banks, to pressure Tehran to curb what it
believes is a bid for nuclear arms capability.
US Secretary of State Hillary Clinton played down Khamenei's comments, saying she did not think they had any bearing on the next round of talk between Iran and the United States, Russia, China, Britain, France and Germany, scheduled for June 18-19 in Moscow.
"I don't draw any conclusions from that statement with respect to the potential success of the talks in Moscow," Clinton told reporters in Stockholm.
"We look forward to seeing what the Iranians actually bring to the table in Moscow. We want to see a diplomatic resolution," she said. "We now have an opportunity to achieve it and we hope it is an opportunity that is not lost, for everyone's sake."
Diplomats say that at the last talks, in Baghdad on May 23-24, Iranian negotiators were more forthcoming than before, and believe Khamenei has given his negotiating team a wider hand to explore a deal.