"... the International Atomic Energy Agency has
confirmed that... Iran’s most sensitive nuclear stockpile – uranium
refined to a fissile concentration of 20 percent . . . had declined
significantly for the first time in four years and was now well below the
amount needed for one bomb... Since halting this enrichment under last year’s
deal, Iran has diluted some of the material to lower-level uranium and
converted some into a less proliferation-sensitive oxide form… Iran lacks the
capacity to take the 19.25% enriched uranium up to bomb grade, and there is no
evidence that it has solved the many thorny technical problems involved in
bomb-making..."
http://www.juancole.com/2014/02/breakthrough-ignoring-stockpile.html