By Elise Labott
Iran has begun installing advanced new centrifuges at its main uranium enrichment site at Natanz that are capable of accelerating production of fuel for a nuclear weapon, a move that senior U.S. officials warned could jeopardize upcoming talks aimed at curbing Iran’s nuclear ambitions.
The disturbing revelation comes as the “P5 plus one” diplomatic bloc of countries is preparing to offer a package of incentives to Iran to close its underground facility at Fordow and ship out its stockpile of uranium already enriched to a high purity level of 20%.
“This can’t help the talks,” a senior US official said.
The P5 plus one bloc consists of the United States, Britain, France, Germany, Russia and China.
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