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Iran declares major breakthroughs in nuclear drive

Israel wants time limit on Iran nuclear talks
An Israeli minister said on Friday there should be a time limit on any talks between the international community and arch-foe Iran over its controversial nuclear programme. "We have to think together how long this dialogue should last," vice prime minister Silvan Shalom told army radio. "What is certain is that neither Israel, nor the Arab countries, Europe and the United States can tolerate an Iran armed with a nuclear weapon," he said. Six world powers led by Washington on Wednesday decided to invite Iran for direct talks on its nuclear programme which they suspect is aimed at making atomic weapons but which Tehran insists is civilian and purely peaceful. Widely considered to be the Middle East's sole nuclear armed power, Israel considers Iran its arch-enemy because of repeated statements by President Mahmoud Ahmadinejad that the Jewish state should be wiped off the map. Israel's new Prime Minister Benjamin Netanyahu has repeatedly said that Tehran's nuclear programme constituted the biggest concern to Israel, saying it was the biggest threat the Jewish state faced since its creation in 1948.

Enrichment at heart of Iran nuclear programme
Enriching uranium so that it can be used for nuclear power -- or building a weapon of mass destruction -- lies at the heart of the controversy surrounding Iran's nuclear programme. The point of enrichment is to boost the ratio in uranium of the uranium-235 isotope, which splits in a chain reaction and releases energy. Enriching the uranium to the point where it comprises three to five percent of uranium-235 enables engineers to make fuel for a nuclear reactor, which requires a slow, controllable chain reaction. But by boosting the U-235 to 90 percent or more, engineers can make the material for a nuclear bomb, which needs a very fast, violent fissile process. The enrichment method used by Iran is a classic type in which uranium hexafluoride (UF6) gas is whizzed around in a centrifuge at very high speeds. A different isotope of uranium, called uranium-238, is separated from the mass by this centrifugal force. Because it is slightly denser than U-235, the U-238 gathers at the bottom of the chamber and can thus be extracted. The lighter atoms with the precious U-235 isotope are then collected and put into another centrifuge, and the process is repeated again and again, in a so-called cascade, in order to boost the proportion of fissile atoms. The process is long because only 0.7 percent of naturally-occurring uranium atoms are U-235, and the remainder are all U-238. The collected U-238 can be used in "depleted uranium" weapons, providing a heavy slug for armour-piercing shells. When the desired enrichment level is reached, the gas is converted by chemical process to a uranium oxide (UO2) which is used as fuel pellets for a nuclear reactor. If a bomb is sought, highly enriched oxide is engineered into ingots of uranium metal. But for a bomb to work, there has to be enough material to generate a critical mass that sustains the chain reaction. The bomb-maker also has to master the key technologies of shaping the charge and controlling the detonation sequence so that critical mass actually happens, rather than fizzes out, and occurs at the desired time rather than prematurely or accidentally.
by Staff Writers
Isfahan, Iran (AFP) April 9, 2009
Iran declared on Thursday major advances in its controversial atomic drive as President Mahmoud Ahmadinejad opened a nuclear fuel plant and announced the testing of two high capacity centrifuges.

Ahmadinejad's announcements at a function in Isfahan province marking national nuclear day are likely to trigger fresh concerns among world powers, who fear Iran's nuclear programme is aimed at making atomic weapons, but Washington's first reactions were sceptical.

Tehran insists its programme is for peaceful purposes only.

Ahmadinejad said Iran has notched up two achievements -- the manufacture of nuclear fuel and "testing of two kinds of new centrifuges having greater capacity (to enrich uranium) than the existing ones."

He was speaking after cutting the ribbon at the fuel facility in Isfahan, which the Mehr news agency said can produce 10 tonnes of nuclear fuel annually to feed the heavy water 40-megawatt Arak reactor and 30 tonnes for light water reactors such as the Bushehr nuclear plant.

The fuel for Bushehr has to meet Russian technical specifications, as the plant has been constructed by Moscow and will be initially operated by Russian engineers.

The opening of the fuel plant indicates that Iran has mastered the complete nuclear fuel cycle from uranium mining to enrichment, even as world powers urge the Islamic republic to halt its programme completely.

"Today the nuclear fuel cycle has been practically completed and there is no room for the idea of halting (uranium) enrichment in the negotiations" with global powers, the head of Iran's parliamentary commission of national security and foreign policy, Alaeddin Borujerdi, said after the plant was opened.

Speaking at the same function as Ahmadinejad, atomic chief Gholam Reza Aghazadeh said Iran has reached a "new phase of acquiring the technolgy of uranium enrichment."

"Today in Natanz there are around 7,000 centrifuges installed," he said of the uranium enrichment facility in Isfahan province. On February 25, he said Iran had 6,000 centrifuges installed there.

In its February 19 report, the International Atomic Energy Agency said 3,964 centrifuges were actively enriching uranium in Natanz.

The UN body said another 1,476 were undergoing vacuum or dry run tests without nuclear material and 125 had been installed but remained stationary.

Uranium enrichment is at the heart of global fears that Iran is secretly trying to develop nuclear weapons, because the process can be used both to make nuclear fuel and the fissile core of an atom bomb.

World powers are concerned that Iran could configure the Arak plant in such a way that it can be used to help make an atom bomb, but Tehran says the reactor is planned to make isotopes only for agricultural and health purposes.

Commenting on Thursday's news, State Department spokesman Robert Wood said "I think we certainly could view it with scepticism."

"Iran has in the past, you know, announced that it is -- it was running a certain number of centrifuges that didn't really pan out with regard to the IAEA's own estimate.

"So it's not clear."

Iran is in defiance of five UN Security Council resolutions calling for a freeze of enrichment, including three resolutions imposing sanctions.

On Wednesday, in a bid to defuse tensions, six world powers led by Washington invited Iran for direct talks on the programme.

In a joint statement, the United States, Britain, Russia, China, France, and Germany said EU foreign policy chief Javier Solana has been tasked to invite Iran for direct talks on its nuclear plans.

US Secretary of State Hillary Clinton said Washington will participate fully in the talks.

"There's nothing more important than trying to convince Iran to cease its effort to obtain nuclear weapons," Clinton said.

And Wood reiterated that Washington would seek to engage with Iran "without preconditions" even as "concerns remain" about Iran's nuclear aims.

During his speech Ahmadinejad said the talks should be based on mutual respect.

"No free man will accept one-sided or conditional talks under intimidatory atmosphere," he said.

"The Iranian nation has always been ready for talks. We welcome change ... We think the time for big change has come."

Earlier Thursday, presidential advisor Ali Akbar Javanfekr said Tehran will study the "constructive proposal" from the six world powers which "shows a change of approach" by them.

"We hope that this proposal means a change of approach to a more realistic attitude. The Islamic Republic of Iran will examine (it) and give its response."

earlier related report
US voices 'skepticism' over talk of Iranian nuclear progress
Washington on Thursday met with "skepticism" an announcement by President Mahmoud Ahmadinejad that major advances have been achieved in Iran's nuclear program.

"I think we certainly could view it with skepticism," said State Department spokesman Robert Wood, commenting on reports that there are some 7,000 centrifuges installed in Iran to enrich uranium.

"Iran has in the past, you know, announced that it is -- it was running a certain number of centrifuges that didn't really pan out with regard to the IAEA's (International Atomic Energy Agency's) own estimate.

"So it's not clear," he said.

For her part, Secretary of State Hillary Clinton said: "Well, first of all, we don't know what to believe about the Iranian program. We've heard many difference assessments and claims over a number of years."

She added that the United States is involved with talks by world powers with Iran in part to "enforce the international obligations that Iran should be meeting to ensure that the IAEA is the source of credible information."

Cinton pointed to "a great gap between what the IAEA observed about seven weeks -- six, seven weeks ago and what the Iranians are now claiming."

Ahmadinejad on Thursday declared the major advances at the opening of a nuclear fuel plant. At the event he announced that two high-capacity centrifuges were being tested.

Speaking at the same event, Iran's atomic chief Gholam Reza Aghazadeh said: "Today in Natanz there are around 7,000 centrifuges installed."

On February 25, he said Iran had 6,000 centrifuges installed at the uranium enrichment facility in Natanz, in Isfahan province.

Washington and other nations fear that Iran's nuclear program is aimed at making atomic weapons. Tehran insists its program is for peaceful purposes only.

Ahmadinejad said Thursday Iran has notched up two achievements -- the manufacture of nuclear fuel and "testing of two kinds of new centrifuges having greater capacity (to enrich uranium) than the existing ones."

In its February 19 report, the IAEA, the UN nuclear watchdog, said 3,964 centrifuges were actively enriching uranium in Natanz.

It said another 1,476 were undergoing vacuum or dry run tests without nuclear material, and an additional 125 centrifuges had been installed but remained stationary.

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Russia Says Iran No Threat To Us As New Sanctions Imposed
Washington (AFP) April 7, 2009
Iran poses no threat to the United States, Russia said Tuesday, rebuffing a key argument of President Barack Obama on whether to go ahead with a European missile shield bitterly opposed by Moscow.







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