> If that is still to be discussed, then what have they been discussing so far? That has always been the main issue.

If the agreement means Iran seriously agrees to dilute (which boils down to destroying) it's nuclear stockpile, with UN or US or ... witnesses, that's pretty damn new.

Iran hasn't agreed to that. United States agrees to allow Iran to dilute its stockpile of highly enriched uranium on Iranian soil under a future comprehensive agreement.