u.s. military failure, but also a u.s. intelligence failure. back in june, there were reports of an intelligence assessment that the afghan government could collapse six months after a u.s. withdrawal. a withdrawal that wasn't supposed to happen for another couple of weeks, by the way. then on wednesday, that was revised down. u.s. intelligence warning it could be 30 days until the taliban isolated kabul. 90 days until they took it over. which brings us to today. afghanistan's president ghani has fled the country. taliban insurgents are trapsing through the presidential palace and video out of kabul looks reminiscent of the fall of saigon. the questions many of us are asking right now, how did this happen? who's to blame? joining me now, a senior advisor to the senior official in the obama state department and colonel jack jacobs. colonel, let me start with you. for decades, the vietnam war has