Nightly News   |  February 21, 2013

‘Iran has made good on its threat’

International nuclear inspectors said Thursday Iran has made significant upgrades in its ability to enrich uranium. The US called this a provocative step – but fortunately the centrifuges were installed above ground where the US can see them. NBC’s Andrea Mitchell reports.

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>>> another big story overseas tonight. one the white house is watching closely. international nuclear inspectors said today, iran has made significant upgrades, as they called it, in its ability to enrich uranium, bringing that nation even closer to being able to make a nuclear weapon . our chief foreign affairs correspondent, andrea mitchell , following all of this tonight in our washington newsroom. andrea, good evening.

>> reporter: good evening, brian. less than a week before iran and the u.s., along with other allies, are set to finally resume nuclear talks, those weapon inspectors reported today that iran has made good on its threat to start installing advanced centrifuges in its many nuclear plant at netans, increases iran 's ability to produce enriched uranium which can quickly be converted to weapons grade . the u.s. called this a provocative step. the good news, the centrifuges are being installed above ground. the report says there is no sign that iran has started operating centrifuges underground in a once secret plant that would be much harder to attack. the inspectors also said iran seems to be capping its stockpile of nuclear fuel to avoid crossing israel's red line of having enough for a bomb. that could create more time for diplomacy, delaying the threat of military action, brian.

>> andrea mitchell in our d.y.