The White House says the United States doesn't believe Iran is capable of enriching uranium to the degree the Islamic Republic claims.
Iranian President Mahmoud Ahmadinejad said Thursday that Iran has produced its first batch of uranium enriched to a higher level than before, raising fears it may be moving closer to the ability to produce material for a nuclear weapon. White House spokesman Robert Gibbs dismissed Iran's claims, saying that country's leadership has made a series of statement based on politics, not physics.
The claim of new progress in Iran's nuclear program came a day after the U.S. Treasury Department imposed new sanctions, freezing the assets in U.S. jurisdiction of a Revolutionary Guard general and four subsidiaries of a construction firm he runs.
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