more granule level across the world. it is frustrating to people who think there must be a magical answer to this. you have to do the best we can an realize we are in the process of making a world that is better than one we ever known before but there are severe challenges and the tools at hand for people that we put in positions of leadership are not as effective as they used to be. >> president obama has at the moment to trust three people who you wouldn't necessarily trust with the family silver. president bashar al-assad putin and rouhani. start with iran. that is always a big talking part. christian amanpour interviewed rouhani and he, compared with the interview i did with mahmoud