"If you feel that we are not respecting your engagements then we will adopt a different policy and the heavy consequences of this policy will burden those who have not respected their engagements," he said in a speech to foreign diplomats, state television reported.

His comments came as the European Union pressed on with talks in Geneva to persuade Iran to give guarantees it is not developing nuclear weapons. Iran has suspended its controversial uranium enrichment work while the talks continue.

"Those who have being thumping the drums of war and have launched psychological warfare against Iran must know that the Iranian people will not allow the aggressors to put one foot on Iranian soil," he said in a reference to the United States.

"But if this ever arrives the aggressors will be burned in the hell of the storm of the people's anger," Khatami added.

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