The Taliban flag is fluttering over the Afghan presidential palace on the same day the U.S. and the world marks the 20th anniversary of the Sept. 11 attacks. The milestone anniversary Saturday takes place just weeks after the chaotic U.S. withdrawal from Afghanistan and the return to power of the Taliban, the faction that sheltered the al-Qaida terror network founded by Osama bin Laden that carried out the attacks. The Taliban’s new prime minister Mohammad Hasan Akhund raised the flag in a ceremony at 11 a.m. local time on Saturday. The militant group also painted their white backdrop flag on the entry gate to the U.S. Embassy building.