a potentially alarming discovery but nuclear inspectors in iran. the united nations weapons inspectors found traces of radioactivity and underground bunker in iran that could mean that iran has moved closer to reaching the uranium threshhold, meaning to arm nuclear missiles. that follows more talks with iran this week that made little progress. joining me now is forming u.s. ambassador mark ginsburg. good morning to you. thank you so much for being here. let s start with the on question. do you think that iran at this point is even closer now to producing the nuclear weapon than they were a year ago? absolutely. the fact that they have been enriching uranium in exsays of 20%, which is the threshold you need to go to 90%, that s the