Afghanistan’s Taliban marked the second anniversary of their return to power on Tuesday, celebrating their takeover of Kabul and the establishment of what they said was security throughout the country under an Islamic system.After a lightning offensive as U.S.-led foreign forces were withdrawing after 20 years of inconclusive war, the Taliban entered the capital on Aug. 15, 2021, as the Afghan security forces, set up with years of Western support, disintegrated and U.S.-backed President Ashraf Ghani fled.