mr. carstens: he has an extensive background in negotiations. amna: that's adam thaler? mr. voler. we are giving him a good team. we have been able to build a good team at the state department that handles these issues and he will be coming in and taking charge of that and i wish him the best and i will always be a phone call away if i can be helpful. >> we never -- we know there are a number of americans still being held in afghanistan by the taliban, including two men we have interviewed their families of. the president spoke with their families and the taliban i understand have been pushing for the release of a man held at guantanamo bay described by u.s. officials as a senior aide to osama bin laden. you are in -- you were in doha earlier this month. did you offer him in exchange for the three americans? mr. carstens: i would love to tell you more but this negotiation is still in motion. in a perfect world we would be able to close the gap between us and the taliban. having said that, we are not area. we are working on it. as far as specifics go it is best not to talk abo