. >> next question comes from pierre garnam. >> thank you. it is obvious that the next step would be raqqah, also mosul. how confident is this campaign and the presence of the regime activity absence of any transition in syria, how hopeful are you to come into terms with russia on what's happening in syria? >> well, hopeful is the right word. i can't say that i'm confident, because there are very tough issues that are being resolved, but i do reiterate what i said in moscow. we made progress in moscow, and in the last couple of days, as our teams have been working to do the homework that we said that we'd do coming out of moscow, it has been constructive. so, we're going steadily and carefully down a road without making promises to people in public that we can't keep, because i think people are already frustrated enough by what has been happening in syria. so we're going to go methodically. there is a possibility if everybody does what they have said they are prepared to do, that this could change what is happening in syria. so that's our goa