early to tell. i think we're going to see what happens in the next few months, frankly, and sort out the decision making in the biden administration. it's a political question that will confront biden in the months ahead. >> tim, we're hearing comparisons of this moment, what we're seeing in kabul, to the fall of saigon. the iconic image of people fleeing the u.s. embassy by helicopter as the city fell. took a look at these side by side images. here's what secretary of state tony blinken said about that on cnn earlier today. >> president biden is intent on avoiding a saigon moment, that's a reference, of course, to the hasty and humiliating u.s. evacuation from vietnam, but with this troop surge to air lift americans out of afghanistan, aren't we already in the midst of a saigon moment? >> no, we're not. this is not saigon. we went to afghanistan 20 years