Iranian President Mahmoud Ahmadinejad Wednesday warned his U.S. counterpart Barack Obama of a "tooth-breaking" response, as he condemned Washington 's new nuclear policy.

Ahmadinejad lashed out after the
U.S. announced new limits on use of the nation's nuclear arsenal, but suggested that exceptions could be made for "outliers" such as Iran and North Korea , both accused by the West of flouting United Nations resolutions concerning their nuclear programs.

"I hope these published comments are not true...he [Obama] has threatened with nuclear and chemical weapons those nations which do not submit to the greed of the
United States ," Ahmadinejad said in speech broadcast live on state television.

"Be careful. If you set step in Mr. [George W.] Bush's path, the nations' response would be the same tooth-breaking one as they gave Bush," he said as crowds in the northwestern city of
Orumieh cheered "Death to America !"

In a policy shift,
Washington said Tuesday it would only use atomic weapons in "extreme circumstances" and wouldn't attack non-nuclear states--but singled out Iran and North Korea as exceptions.

After a year of attempting diplomatic initiatives, Obama in recent weeks has ratcheted up pressure for imposing new U.N. sanctions against
Iran for pursuing its nuclear program, which Washington suspects is masking a weapons drive.

Ahmadinejad brushed off Obama's policy, saying it reflected "his inexperience."

"What Mr. Obama has said even Mr. Bush whose hands were smeared with blood of nations did not," said the hardliner who has refused to budge under Western pressure to abandon
Tehran 's atomic drive.

"We advise Mr. Obama to be careful in not signing anything they put in front. Wait and weigh things a bit. Beware that those who were bigger and stronger than you couldn't do a damn thing, let alone you," he said.

Ahmadinejad wasn't alone in condemning
Washington 's nuclear policy which also came under attack Wednesday from two other top Iranian officials.

"We regard the recent position and comments of the
United States as propaganda," foreign minister Manouchehr Mottaki told reporters.

Defense Minister Ahmad Vahidi said the new
U.S. policy supported Israel .

"They use new designs for new bombs, support
Israel which has many nuclear warheads, but on the other hand pressure Iran . This is exactly a domineering order and oppressive dealing which Iran does not accept," he was quoted as saying by the ILNA news agency.

Israel is Middle East 's sole but undeclared nuclear power and it hasn't ruled out a military strike against Iran to stop its atomic program.

Mottaki meanwhile said
Iran was still hopeful that a U.N.-drafted nuclear fuel deal could be finalized if the U.S. , France and Russia showed "political will."