Twenty-five years after the September 11 attacks, what has happened to al-Qaeda?

Key Takeaways

• Osama bin Laden was killed by US forces in 2011
• Al-Qaeda has survived for 25 years after the September 11 attacks
• The group has spawned affiliates and inspired attacks worldwide
• Osama bin Laden's killing in 2011 was a significant setback
• Islamic State emerged as a rival to al-Qaeda
• Al-Qaeda still serves as a source of support and inspiration for terrorists