U.S. invasion of Afghanistan (2001–2021)
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| U.S. invasion of Afghanistan (2001–2021) | |
|---|---|
| Conflict | U.S. invasion of Afghanistan (2001–2021) |
| Partof | War on Terror |
| Date | October 7, 2001 – August 31, 2021 |
| Place | Afghanistan, Pakistan (border operations) |
| Combatant1 | United States, United Kingdom, Canada, Australia, Germany, France, Italy, NATO |
| Combatant2 | Taliban, Al-Qaeda, Hezb-e Islami Gulbuddin, Haqqani network, Islamic State – Khorasan Province |
| Commander1 | George W. Bush, Dick Cheney, Donald Rumsfeld, Colin Powell, Donald Trump, Joe Biden, David Petraeus, Stanley McChrystal, James Mattis |
| Commander2 | Mullah Omar, Osama bin Laden, Mullah Akhtar Mansour, Hibatullah Akhundzada, Jalaluddin Haqqani |
| Strength1 | Coalition forces, NATO-led International Security Assistance Force |
| Strength2 | Taliban insurgents, affiliated militias |
| Casualties3 | Hundreds of thousands of civilians injured or killed; military casualties among coalition and Afghan forces |
U.S. invasion of Afghanistan (2001–2021) The U.S. invasion of Afghanistan began after the September 11 attacks and constituted the opening campaign of the War in Afghanistan (2001–2021), aimed at dismantling Al-Qaeda and removing Taliban rule. The intervention evolved into a prolonged multinational counterinsurgency involving NATO, regional actors, and successive U.S. administrations, culminating in a withdrawal and rapid collapse of Kabul to the Taliban.
Background and causes
The invasion was triggered by the September 11 attacks attributed to Al-Qaeda under Osama bin Laden, who had found sanctuary after the Battle of Kandahar (1994–1996) amid Taliban rule established following the Afghan Civil War (1992–1996). U.S. policymakers including George W. Bush, Condoleezza Rice, and Donald Rumsfeld invoked the Authorization for Use of Military Force (2001) and sought cooperation from allies such as United Kingdom, Germany, and Pakistan. Regional dynamics involved Soviet–Afghan War legacies, the role of Inter-Services Intelligence and figures like Pervez Musharraf, while international law debates referenced the United Nations Security Council and doctrines such as collective self-defense.
Invasion and initial operations (2001–2002)
Operation planning by Central Intelligence Agency paramilitary teams, United States Special Operations Command, and air assets from the United States Air Force led to Operation Enduring Freedom on October 7, 2001, with strikes against Kabul-area targets and Al-Qaeda infrastructure. Allied contributions from Royal Air Force, Canadian Forces, Australian Defence Force, and German Bundeswehr supported Northern Alliance partners like Ahmad Shah Massoud’s associates to capture Kabul and Mazar-i-Sharif. The U.S. and coalition forces targeted Al-Qaeda training camps and leadership sanctuaries, pursued Osama bin Laden across the Tora Bora region, and established bases such as Bagram Airfield, while diplomatic efforts involved Hamid Karzai and interim arrangements leading to the Bonn Agreement.
Coalition and NATO-led occupation (2003–2014)
As combat shifted to stabilization, the NATO-led International Security Assistance Force (ISAF) expanded under NATO command, with rotating commanders including John R. Allen and David McKiernan, and contributions from states like Italy, France, Spain, and Poland. Reconstruction programs involved United States Agency for International Development, United Nations Assistance Mission in Afghanistan, and NGOs coordinating on projects in Kandahar, Helmand Province, and Herat. Efforts at state-building produced the Islamic Republic of Afghanistan under Hamid Karzai and later Ashraf Ghani, while security-sector reforms sought to train the Afghan National Army and Afghan National Police with trainers from Marine Corps, British Army, Canadian Army, and Turkish Armed Forces.
Insurgency, counterinsurgency, and civil impact (2003–2020)
After 2003, the Taliban regrouped and allied networks such as the Haqqani network and Tehrik-i-Taliban Pakistan fueled an insurgency across Helmand, Kunar, and Paktia provinces, clashing with ISAF and U.S. units such as Army Special Forces, Navy SEALs, and Marine Expeditionary Units. Counterinsurgency strategies evolved under commanders like David Petraeus and Stanley McChrystal, emphasizing "clear, hold, build" and civil-military cooperation with Provincial Reconstruction Teams, while simultaneous drone campaigns by Joint Special Operations Command targeted leaders including Mullah Akhtar Mansour. The conflict produced major battles such as the Battle of Marjah and Battle of Kunduz (2015), widespread civilian casualties documented by Human Rights Watch and Amnesty International, illicit economies including opium production tied to regions like Nangarhar, and political controversies including the Panetta Review and revelations by Seymour Hersh and WikiLeaks.
Withdrawal, Taliban offensive, and fall of Kabul (2020–2021)
Negotiations spearheaded by Zalmay Khalilzad led to the U.S.–Taliban deal (2020) signed under Donald Trump, setting timelines later accelerated by Joe Biden’s decision to withdraw remaining forces by August 2021. As U.S. and NATO troop levels decreased, Taliban offensives captured provincial capitals including Herat, Kandahar, and Mazar-i-Sharif, culminating in the rapid Fall of Kabul (2021) and the collapse of the Afghan government led by Ashraf Ghani, who fled to United Arab Emirates. Evacuation operations involved Operation Allies Refuge, USS Gerald R. Ford-era carrier task forces, and multinational airlifts via Hamid Karzai International Airport amid attacks like the Kabul airport attack (2021) claimed by Islamic State – Khorasan Province, with high-profile casualties including Cpl. Joshua Leakey-style mentions in public reporting.
Aftermath, consequences, and legacy
The withdrawal left the Taliban in control of Afghanistan and prompted debates among policymakers including former officials Robert Gates, Hillary Clinton, and scholars at institutions like Brookings Institution, RAND Corporation, and Council on Foreign Relations. Analyses cite impacts on Counterterrorism strategy, relations with Pakistan, refugee flows to Iran and Europe and humanitarian crises addressed by International Committee of the Red Cross and UNHCR. Legal and historical assessments reference inquiries such as the Pentagon Papers (historical analogues)-style debates, lessons for future interventions discussed at Harvard Kennedy School and Stanford University, and cultural portrayals in works like Zero Dark Thirty, The Kite Runner, and reporting by The New York Times and BBC News. The long-term legacy includes shifts in U.S. grand strategy, debates over nation-building, and continuing regional insecurity involving actors such as Russia and China engaging with the Taliban regime.