AdvertisementCan The Afghan Army Hold Off The Taliban Without The U.S.?April 16, 2021Tom BowmanfacebookEmailU.S. Defense Secretary Lloyd Austin, center, walks on the red carpet with Afghan officials as they review an honor guard at the presidential palace in Kabul, Afghanistan, on March 21. President Biden said the U.S. will withdraw all remaining troops from the country by Sept. 11, ending the U.S. involvement in the America's longest-ever war. (AP)