The president is expected to announce the withdrawal of troops from the Middle Eastern country by Sept. 11, the 20th anniversary of the terrorist attacks that prompted America's longest war. LEARN MORE: Biden on Afghanistan withdrawal: 'It is time to end America’s longest war': https://abcn.ws/3dfCls7 As US troops prepare to pull out, a look at the war in Afghanistan by the numbers: https://abcn.ws/3dgZCdm Subscribe to GMA's YouTube page: https://bit.ly/2Zq0dU5 Visit GMA's homepage: https://www.goodmorningamerica.com #Biden #Afghanistan #September11 #War #GMA