10/07/2026
The War in Afghanistan (2001–2021) was a 20-year armed conflict that began on October 7, 2001, when a United States-led coalition launched Operation Enduring Freedom in response to the September 11 terrorist attacks.
Overview and Key Dates
• Start: October 7, 2001, following the 9/11 attacks, after the Taliban refused to surrender al-Qaeda leader Osama bin Laden.
• Core Goals: Destroy al-Qaeda, oust the Taliban regime, and build a stable, democratic Afghan state.
• End of NATO Combat: December 2014, after which a smaller allied support and training mission remained.
• Taliban Resurgence & Withdrawal: The U.S. and its allies fully withdrew by August 30, 2021, leading to the immediate collapse of the Western-backed Afghan government and the return of the Taliban to power in Kabul.
Phases of the Conflict
• Toppling the Taliban (2001): A rapid initial campaign by U.S. special forces, intelligence operatives, and the anti-Taliban Northern Alliance that removed the ruling regime from major cities.
• Insurgency and Nation-Building (2002–2008): Focused on military stabilization, reconstruction, and establishing a new Afghan constitution and government under President Hamid Karzai, while the Taliban regrouped in rural areas and along the Pakistani border.
• Counterinsurgency and Troop Surge (2008–2014): A major escalation under U.S. strategy aimed at breaking the Taliban's momentum before transitioning security responsibilities to Afghan national forces.
• Stalemate and Final Withdrawal (2015–2021): Years of grinding local conflict and peace negotiations (including the 2020 U.S.-Taliban Doha agreement) culminating in the final foreign military exit.
Casualties and Impact
• Coalition Forces: Over 3,300 military personnel killed, including more than 2,200 Americans.
• Afghan Security and Civilians: Tens of thousands of Afghan national security personnel and at least 46,000 to 47,000 civilians lost their lives in the 20-year conflict, with millions more displaced.
• Cost: Estimated at roughly $2.3 trillion by U.S. accounting.