Under the agreement , Iran agreed to eliminate its stockpile of medium - enriched uranium , cut its stockpile of low - enriched uranium by 98 % .
Under the agreement , Iran reduce by about two - thirds the number of its gas centrifuges for 13 years .
Under the agreement , Iran agreed to eliminate its stockpile of medium - enriched uranium , cut its stockpile of low - enriched uranium by 98 % , and reduce by about two - thirds the number of its gas centrifuges for 13 years .