brought the world's number one terrorist leader to justice. abu bakr al baghdadi is dead. he died after running into dead end tunnel, whimpering and crying and screaming all of the way. he reached the end of the tunnel as our dogs chased him down. he ignited his vest killing himself and three children. but test results gave certain immediate and totally positive identification. it was him. >> and this is where it happened in northwest syria and close to the border of turkey, and standing by to kick off the coverage we have nbc white house correspondent hans nichols, and foreign correspondent kim kube,