responsible way, and we think people expect us to do that. >> john, what is the department's assessment of the capabiliies of isis-k. and is there a concern that they could lose to large attacks against the united states post august 31st? >> they are a serious terrorist threat and that was brought home to us in pretty stark ways yesterday. we take the threat very, very seriously. i don't want to -- i'm not going to speculate about future threats, what i will tell you is the president made this clear, the secretary made it clear to the leadership at the pentagon, we're going -- we're not going to allow a tax on the homeland to emanate from afghanistan, again, like they did 20 years