In a mocking tone, Iranian president Mahmoud Ahmadinejad told the UN Security Council that it would begin immediately, the installation of 3,000 centrifuges at its Natanz uranium enrichment plant starting Sunday.

Centrifuges spin uranium gas into enriched material that can then be used to produce nuclear fuel.

Iran officials say they will NOT suspend their uranium enrichment process and intend on expanding Iran's enrichment program to 54,000 centrifuges which will produce enough enriched uranium to fuel the 1,000-megawatt reactor built by Russia at the Bushehr plant, in southern Iran.

Iran thumbs its nose at sanctions

Ali Larijani, Tehran's chief nuclear negotiator, told the Kayhan newspaper: "We will start our installation activities at the Natanz facility."

Mahmoud Ahmadinejad, the Iranian president, also mocked the UN sanctions imposed on Saturday over the country's nuclear programme.

"It is a piece of torn paper ... by which they aim to scare Iranians... It is in the Westerners' interest to live with a nuclear Iran," Ahmadinejad said in a speech at the former American embassy in Tehran on Friday.

Ahmadinejad also told countries that backed the UN resolution to abandon attempts to persuade Iran to give up its nuclear programme.

"Give up this muppet game. You cannot send secret friendly messages to us and at the same time show your teeth and claws. End this dual game," Ahmadinejad said, according to Iran's IRNA news agency.

Iran insists its nuclear program is intended to produce energy, uranium enrichment is it's "inalienable right," and it will continue the process it.

Ahmadinejad says “issuers” of UN sanctions resolution against Iran “will soon regret their useless act”

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