collision course, and it could get scarier," and you write, both say they don't want a war, but each feeds off the other, and both have behaved reckless way in ways that increased the risk of conflict. how did the shooting down of this drone escalate to the situation that we have right now with iran? >> well, i mean a great deal depends on where the drone was. iran insists that the drone was over iranian airspace, that they collected pieces of it in iranian waters. if that is true, then they are in a much better position. the u.s. insists that it was in international airspace and that would be an enormous provocation. so, you know, the basic thing we have to establish is the location of that drone. and, you know, the fact that the drone was shot down may also play into the reasons for the delay. indeed, as the art cal suggests, one of the first things we would do is go after the air defense systems that iran has.