▁nations ▁to ▁develop ▁nuclear ▁weapons ▁of ▁their ▁own ▁further ▁reducing ▁US ▁influence ▁in ▁a ▁critical ▁region . ▁In ▁ 2 0 0 3 , ▁the ▁United ▁States ▁ins isted ▁that ▁Te h ran ▁be ▁" h eld ▁account able " ▁for ▁seeking ▁to ▁build ▁nuclear ▁arms ▁in ▁viol ation ▁of ▁its ▁agre ements . ▁In ▁June ▁ 2 0 0 5 , ▁the ▁US ▁secretary ▁of ▁state ▁Cond ole ez za ▁R ice ▁required ▁former ▁I AE A ▁head ▁Moh amed ▁El Bar ade i ▁to ▁either ▁" t ough en ▁his ▁st ance ▁on ▁Iran " ▁or ▁fail ▁to ▁be ▁chosen ▁for ▁a ▁third ▁term ▁as ▁I AE A ▁head . ▁The ▁I AE A ▁has ▁on ▁some ▁occasions ▁critic ised ▁the ▁st ance ▁of ▁the ▁U . S . ▁on ▁Iran ' s ▁program . ▁The ▁United ▁States ▁den ounced ▁Iran ' s ▁successful ▁en rich ment ▁of ▁u ran ium ▁to ▁fuel ▁grade ▁in ▁April ▁ 2 0 0 6 , ▁with ▁sp okes man ▁Scott ▁McC le ll an ▁saying , ▁they ▁" continue ▁to ▁show ▁that ▁Iran ▁is ▁moving ▁in ▁the ▁wrong ▁direction ". ▁In ▁November ▁ 2 0 0 6 , ▁Se ym our ▁H ers h ▁described ▁a ▁class ified ▁draft ▁assess ment ▁by ▁the ▁Central ▁Int elligence ▁Agency ▁" ch alleng ing ▁the ▁White ▁House ' s ▁assumptions ▁about ▁how ▁close ▁Iran ▁might ▁be ▁to ▁building ▁a ▁nuclear ▁bomb ." ▁He ▁continued , ▁" The ▁C IA ▁found ▁no ▁conclus ive ▁evidence , ▁as ▁yet