but i don't want to sound polly annish about that because these are trends that are fragile and need to be nurtured every day. >> your predecessor talked about this a lot, whether the the violence in iraq, the gains you've seen over the past year, are irreversible or not. do you share that assessment? you think we've gone over the hump? in mosul, where a lot of recent violence is taking place, do you think the u.s. troops will be able to pull out of mosul -- >> i know we are going to comply fully with our obligations under the security agreement. we signed that agreement and we will absolutely comply fully with it and that means pulling all combat forces out of the cities. and i think what's important to understand is that, in most cities, our combat forces are already out of the cities. so this is not some brand-new model that we're not sure how it's going to work. but to some extent, we've left the best for last, that is baghdad and mosul. i was up in mosul a few weeks ago and, to be sure, it's a city that has a lot of tension in it. to be sure, there are various groups, whether it