fight to the death mode. it's going to be ugly. >> and barbara, your reporting this week, the u.s. has been tracking recent movements of the isis leader. how big of a priority is the killer or capture of al baghdadi to the u.s.? >> look, if they could find him they absolutely would want to capture or kill him. more likely kill him. hashed to put troops on the ground to capture him in any reasonable fashion, but getting baghdadi is a similar question to conquering mosul, conquering raqqah. what is defeating isis really mean these days? >> hard to define it. >> yes. none of these things are going to in and of themselves change the course of this war. isis now a worldwide ideology. you know, the fighting may have changed in iraq and syria, they may get baghdadi some day, but isis still has the ability to