US completes Afghanistan withdrawal, ending 20-year war; here's a timeline of key events

On September 11, 2001, al-Qaeda orchestrates 9/11 attacks on the US that kill nearly 3,000 people. (Image: News18 Creative)

On March 2, 2002, Shar-I Kot Valley face-off between US-led coalition forces and around 800 Al-Qaeda and Taliban fighters. (Image: News18 Creative)

In 2009, US President Barack Obama announces an increase in military presence in Afghanistan. (Image: News18 Creative)

In 2013, NATO hands over control of security to Afghan forces. The US and NATO formally end their combat mission in Afghanistan. In 2019 peace talks are held between the US and the Taliban in Doha. The Taliban agrees to block international terrorist groups from Afghanistan if the US withdraws its troops. Trump abruptly calls off the talks. (Image: News18 Creative)