25 سال پس از 11 سپتامبر: ردیابی ظهور و سقوط القاعده

25 Years After 9/11: Tracing The Rise And Fall Of al Qaeda

While it has suffered setbacks, notably bin Laden's killing in 2011 by US forces and the emergence of Islamic State as a rival, experts say al Qaeda still serves as a source of support and inspiration for militants in many regions, particularly in Africa.