The Taliban, which has long called itself the “Islamic Emirate of Afghanistan,” announced they had entered Kabul soon after Afghan President Ashraf Ghani fled the country on Sunday afternoon, setting off a rush to the city’s airport and a stepped-up evacuation of the U.S. embassy by a fleet of military helicopters guarded by AH-64 Apache attack helicopters orbiting the once-impenetrable Green Zone. President Joe Biden rushed to move in thousands of U.S. troops to evacuate American officials still in the capital.