Biden's national security adviser talks historic US withdrawal from Afghanistan l GMA

National Security Adviser Jake Sullivan discusses why some Americans were left in Afghanistan past the U.S.' withdrawal deadline of Aug. 31 and if there are plans to bring them back home. LEARN MORE: After 20 years, US ground troops leave Afghanistan, but Americans left behind: https://abcn.ws/3gMXHi5 SUBSCRIBE to GMA's YouTube page: https://bit.ly/2Zq0dU5 VISIT GMA's homepage: https://www.goodmorningamerica.com SIGN UP to get the daily GMA Wake-Up Newsletter: https://gma.abc/2Vzcd5j #GMA #Afghanistan #Kabul #Biden