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The enrichment process

Iran has reiterated that it is a "nuclear power" because it has enriched uranium to 20 percent for use in a medical research reactor. Iran has a stockpile of low-enriched uranium (less than 5 percent). With 20 percent enrichment, it could move quickly to making weapons-grade uranium enriched at 90 percent. Below is a simplified explanation of the enrichment process. Iranian leaders consistently say they are not interested in nuclear weapons.

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Pro-government rally, protests on anniversary of Iran revolution
Article | TEHRAN -- Hundreds of thousands of government supporters massed Thursday in central Tehran to mark the 31st anniversary of Iran's Islamic revolution, while a heavy deployment of security forces largely prevented protesters from using the occasion to stage opposition rallies.

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