>> well, with bob levinson, we've been working hard to establish his whereabouts. with these other americans we know who are in custody including the pastor, the iranians make assertions based on their own legal system. we reject those assertions they have a legal basis for being detains. wolf, it shows one thing which is we're trying to resolve the nuclear issue, which is of great concern to us. it doesn't lessen our concern about other activities of the iranian government. the detention of americans, also their activities in the region as it relates to support for assad. so our concerns extend beyond the nuclear issue. if we can get a peaceful resolution that assures us this they cannot develop a nuclear weapon, that would be in our interests. >> as far as the obama administration is concerned, you still regard iran as a state sponsor of terrorism? >> absolutely, wolf. just taking their support for hezbollah and some of the attacks we've seen across the region and indeed in different parts of the world over the last several years, we have serious concerns about i