>> scheuer. >> also keep in mind that the united states and iran because of the last 35 years of tension and because of this ongoing conflict, even in areas where we have common interest, there's been a lot of common interest in afghanistan, i think afghanistan is a good example. that when they move in the direction of trying to improve relations, they permit themselves to collaborate in these areas of common interest. but when their hostility defines the relationship, even areas of common interest is turned into areas of competition and rivalry. that's certainly up in afghanistan. it is happening in iraq and to a certain extent in syria. even with common interest exists, there overtaken by the larger hostility that defines the relationship. is that larger hostility is significantly reduced as result of a nuclear deal, that's when we'll see an opportunity for the common interest to a much heavier than the hostility and provide the opportunity to utilize that, whether it is an iraq, syria, or in afghanistan. i think it's important to understand that, to fully grasp the extent to which,com