Here’s how the Taliban takeover of Afghanistan could affect al-Qaeda and the Islamic State - The Washington Post

… The Islamic State, a more extreme rival, also retains a presence in Afghanistan. The Taliban is likely to try to root it out, experts said — but the Islamic State, too, could benefit from a security vacuum as the Taliban tries to consolidate power...

https://www.washingtonpost.com/world/2021/08/23/taliban-isis-alqaeda-faq/