engineering support 37 one of the big. est problems in dealing with isis is they ring their possessions with just an incredible array of ieds, booby traps, getting closer to isis's positions. so u.s. support in that respect and more than 600 airstrikes definitely helps. put this in perspective that took six months and there was scarily several hundre isis fighters in ramadi. although it's an important victory, it's more symbolic if you like. >> perspective is important here. let's talk about also around the same time the isis leader abu bakr al baghdadi released this message to his supporters. in reading bits of it, it seemed like a rallying cry to his followers. what struck you about it? >> what struck me is that he acknowledged that there will be hard times ahead and the whole world is now against isis, not