TEHRAN (AFP) - A defiant Iranian President Mahmoud Ahmadinejad said on Wednesday that his country will itself enrich uranium up to 20 per cent purity in a blow to Western efforts to stop Tehrans sensitive nuclear activities. Ahmadinejad also said that even the Islamic republics arch-foe Israel would be unable to do a damn thing about Irans nuclear programme. He reiterated that as far as Tehran is concerned, the nuclear issue is over and said the Islamic republic will not back down from its rights. The Iranian nation will by itself make the 20pc (nuclear) fuel (enriched uranium) and whatever it needs, the President announced in a speech broadcast live on state television from the central city of Isfahan. The latest Iranian move directly flies in the face of world powers which object to Tehran enriching uranium since the process lies at the heart of the nuclear controversy. The material can be used to power a nuclear reactor as well as to make the fissile core of an atomic bomb. Iran denies seeking to acquire nuclear weapons. Neither Israel - widely believed to be the sole nuclear-armed power in the Middle East, albeit undeclared - nor the US has ruled out military action against Iran over its atomic ambitions. The Zionist regime is nothing. Even its masters cannot do a damn thing, Ahmadinejad said on Wednesday, a day after declaring: Any finger which is about to pull the trigger will be cut off. He came down heavily on Western powers and Israel in his speech, accusing them of using against Tehran what he said was an Iranian proposal to exchange its low-enriched uranium (LEU) in return for 20pc enriched material. They want to use against us what we proposed ourselves, he said in his speech in the province where Irans flagship uranium enrichment plant is located in the city of Natanz. He also said Iran will build 10 more plants of the size of Natanz. Ahmadinejad said Iran was still willing to cooperate in a fair atmosphere, but its initiative should not be considered as a concession to world powers. Late on Tuesday, Ahmadinejad lashed out at Moscow for going against Iran in an IAEA vote last week that censured Tehran for building a second uranium enrichment plant. In his speech on Wednesday he called the IAEA vote illegal and said it was influenced by superficially powerful nations. Iran is building the new facility deep inside a mountain near Qom, and disclosure of its existence outraged Western powers. In a rare tirade against the country building Irans first nuclear power plant in the Gulf port of Bushehr, and which had also been expected to deliver advanced air-defence missiles to Iran, Ahmadinejad said on Tuesday Russia had been mistaken in its vote at the IAEA. Russia made a mistake. It does not have an accurate analysis of todays world situation, he said, and vowed that despite the IAEA vote setback, Western powers would not succeed in isolating Iran.