here at home in a similar and bold manner to what we have done for counterterrorism. >> you know, it's interesting to you say that because one of the thing yz have been struck with when i go back and read the literature of the post-9/11 era was this sense that, like, obviously this was the challenge of the 21st century. obviously, this was apockal and defining. obviously, this was our battle in the third reich. obviously, this is going to define civilization, that seems preposterous now, honestly, it seems preposterous to think that was the thing that was going to be the defining story of the 21st century, was this band of murderers that had killed 3,000 of our fellow americans from the hills of afghanistan. and i wonder how you think about that. how that -- how powerful that belief was at that time. >> you're absolutely right that it was. but i think you could have seen