response code named operation rolling tide. the man in charge of that vice admiral michael rogers who president obama nominated to head the nsa. admiral rogers is not commenting on this. >> very disturbing report. let's get to iran's nuclear threat potentially out there. a tough round of negotiations got underway today. supreme leader says he is not optimistic the talks will lead anywhere. let's bring in jim sciutto for the latest. >> you have the supreme leader, a fire brand and then the foreign minister and president as the charmer. you do have nuclear negotiations going on and successful interim nuclear deal. right now what you are hearing from both sides is temping down of expectations. u.s. officials saying they are as likely to not reach a deal as