who became famous in the 1980s when he led the so-called arab mujahideen and was in the headlines from then until his death in pakistan in 2011. so, abu bakr al baghdadi's death is significant, but, as i've said before, isis still operates according to the inspector general of the pentagon in, by the thousands, thousands of fighters in syria, in iraq. they're also present in the sinai peninsula of egypt, in libya, in west africa, in afghanistan, in the philippines. they will not be disappearing just because the leader of the islamic state is now dead. natalie? >> right, hopefully this will be an initial blow to those still working under isis and the flag.