guessing but based on some experience about 20 minutes, but to really answer your questions, i would have to do a little more research. i can tell you that we saw the iranian delegation go by as i walked to the camera to speak to you. and my understanding is that they will speak before john kerry. this is a very important moment for john kerry. it s hard to quantify how significant this moment is for john kerry, except to perhaps say and there has been some reporting about this that there is a diplomatic historian who is quoted as saying he can t remember the last time a secretary of state for the united states has spent this much time on foreign soil negotiating for an agreement since the ver sigh treatment that ended world war i. this is a significant, dedicated hard won process for john kerry.