Members of the Hay’at Tahrir al-Sham, a Sunni Islamist militant group, wave the Taliban flags as they celebrate the Taliban takeover of Afghanistan, in the city of Idlib, Friday, Aug. 20, 2021. The Taliban’s takeover of Afghanistan is giving radical Islamic groups from Syria and the Gaza Strip to Pakistan and West Africa reason to celebrate. They see America’s violence-marred exit from Afghanistan as an opportunity to regroup and reassert their ideology. (AP Photo/Ghaith Alsayed)