going to attack regardless. we were opposed to that vehemently and protested as much. our concern was that turkey's actions, unwarranted as they were, would cause us to lose focus on the defeat isis mission. that's the reason we're there. and last week i spent in the region talking to many of our allies and i spent time in brussels with our nato allies and reiterated to them our commitment to the enduring defeat of isis. >> and obviously this is a huge blow to isis, to have their leader al-baghdadi killed. is there now concern that isis might lash out, that they might try to stage some sort of terrorist attack to show the world, we're still here? >> well, you prepare for everything. but you're right, this is a devastating blow. it's not just their leader. it's their founder. when he formed isis in 2014, it led to establishing the physical caliphate throughout the region, so this is a major blow to them.