it is not inevitable. the jury is still out, but the likelihood there's going to be the taliban overrunning everything and owning the whole country is highly unlikely. >> reporter: look, as kylie was saying, the administration is now arguing that ultimately while they may have misestimated how long it would take the taliban to get to kabul, you know, they were prepared for the contingencies, and that's why they were able to get these forces in there to withdraw u.s. embassy personnel. but, again, there is a huge amount of daylight there between what the president said about a month and a half ago versus what is happening now on the ground after nearly 20 years of u.s. military involvement. the taliban appear to be in control of afghanistan. >> and lots of questions about whether there were some intelligence failures as well. jeremy diamond, thank you so much for that. up next, the imminent fall of kabul is echoing the fall of another city back in 1975, the fall of saigon.