Iran has reportedly only gone over that limit by a few kilograms. The cap on the amount of material Iran can have is only one of many limits that the deal imposes on Iran’s enrichment program. If Iran continues to grow its stockpile, it will begin to reduce the amount of time Iran would need to produce enough fissile material for a weapon (commonly referred to as Iran’s “breakout timeline”). This breakout timeline currently stands at a year because of the limits imposed by the nuclear deal.
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