Iranian President Mahmoud Ahmadinejad said on Thursday that Israel "would not dare attack Iran", after Israel said it tested a missile and warned against Tehran's nuclear program.

"The Zionist regime ... would not dare attack Iran," Ahmadinejad told Al Jazeera television in remarks translated into Arabic, referring to Israel. "The Iranian response would make them regret it, and they know this."

"It knows that any attack on Iranian territories would prompt a fierce response," he added.

Israel tested a missile on Thursday and urged the West to work harder to prevent "the appearance of a nuclear Iran".

Israel Radio said the missile tested was capable of carrying an "unconventional payload" -- an apparent reference to the nuclear warheads Israel is assumed to possess, though it has never publicly confirmed their existence.

Ahmadinejad said Israel was a "criminal regime" which would not gain legitimacy through threats. "It has lost its philosophical reason to exist," he said, adding that regional countries rejected Israel for occupying Palestinian territories.

The Iranian president also said Iran was also prepared for any possible U.S. military strike.

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