The US, France and Russia denied a new nuclear fuel supply proposal had been given to Iran, as claimed by Tehran, while Israel pushed for harsh sanctions to contain the regime's atomic ambitions.

"There is no new proposal on the table," insisted White House spokesman Mike Hammer after the head of Iran's atomic energy organization, Ali Akbar Salehi, said a new offer had been levied by the major powers beyond the previous offer for Tehran to ship out low enriched uranium and get fuel from France and Russia.