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| United States military involvement in Afghanistan | |
|---|---|
| Conflict | United States military involvement in Afghanistan |
| Partof | War on Terror |
| Date | October 2001 – August 2021 (major combat); continued operations afterwards |
| Place | Afghanistan |
| Combatant1 | United States |
| Combatant2 | Taliban, Al-Qaeda |
United States military involvement in Afghanistan was a two-decade campaign initiated in response to the September 11 attacks and conducted alongside multinational partners, regional actors, and Afghan forces. It encompassed the 2001 invasion of Afghanistan, counterinsurgency, nation-building efforts, a troop surge, a NATO-led partnership, and a final withdrawal that culminated in the Fall of Kabul and the return of the Taliban regime (2021). The campaign reshaped NATO, influenced U.S. foreign policy, and affected regional dynamics involving Pakistan, Iran, and India.
After the September 11 attacks, the United States Department of Defense and the George W. Bush administration designated Al-Qaeda and elements of the Taliban as primary targets. The United Nations Security Council passed resolutions sanctioning counterterrorism measures, while diplomatically the Northern Alliance emerged as a key Afghan partner. Intelligence from the Central Intelligence Agency and pressure from legislators such as John McCain and Lindsey Graham shaped planning; legal bases were provided via the Authorization for Use of Military Force Against Terrorists and executive orders from President George W. Bush.
The opening phase, dubbed Operation Enduring Freedom, combined air power from United States Air Force, special operations by United States Special Operations Command, and cooperation with the Northern Alliance to overthrow the Taliban government (1996–2001). Early battles included operations in Kandahar and Tora Bora, where Osama bin Laden and Ayman al-Zawahiri were sought. NATO invoked Article 5 for the first time, leading to political mobilization by allies including the United Kingdom, Canada, and Germany. Initial stabilization efforts involved the Loya Jirga and the establishment of the Transitional Islamic State of Afghanistan under Hamid Karzai.
As insurgent activity resurged, U.S. forces shifted to counterinsurgency doctrine influenced by David Petraeus and the U.S. Army's Field Manual 3-24. Programs integrated Provincial Reconstruction Teams and development initiatives with security operations in provinces such as Helmand, Kunar, and Paktia. The International Security Assistance Force overseen by NATO expanded missions including training the Afghan National Army and Afghan National Police. Notable incidents included the Battle of Marjah context and controversies like Abu Ghraib-era revelations and investigations by the International Criminal Court-related discussions; political debates involved legislators including Barack Obama and John McCain.
In response to deteriorating security, the Barack Obama administration ordered a troop surge led by commanders including Stanley McChrystal and later David Petraeus. Major offensives targeted Helmand Province and coordinated with the NATO Training Mission-Afghanistan and the Resolute Support Mission. Concurrently, the U.S. pursued a transition strategy to transfer security responsibility to Afghan forces and negotiated the Bilateral Security Agreement (2014) with the Afghan government. Political milestones included 2014 Afghan presidential election and intensified diplomacy with Pakistan and China over reconciliation and regional stability.
After the formal end of NATO combat operations, U.S. forces shifted to advising, assistance, and counterterrorism missions under the Resolute Support Mission and separate United States Central Command authorities. High-profile operations targeted ISIS-K and remnants of Al-Qaeda; strikes included use of drone programs managed by United States Central Intelligence Agency coordination and United States Special Operations Command deployments. The period saw persistent insurgent assaults such as attacks on Kabul and challenges in sustaining Afghan institutional capacity, contributing to debates in the United States Congress and among think tanks like the Council on Foreign Relations.
The Doha Agreement between the United States and the Taliban in 2020 set conditions for a full U.S. withdrawal, negotiated during the Donald Trump and Joe Biden administrations. As forces drew down, the Afghan government under Ashraf Ghani faced accelerating territorial losses to the Taliban offensive. In August 2021, Taliban forces entered Kabul leading to the Fall of Kabul and an emergency U.S. evacuation of Kabul operation carried out from Hamid Karzai International Airport involving U.S. Marines, United States Air Force airlift assets, and allied contingents from United Kingdom and Qatar. The rapid collapse prompted international scrutiny including hearings before the United States Congress and analyses by media outlets such as The New York Times and BBC News.
Post-withdrawal analysis has addressed strategic outcomes for NATO, implications for the War on Terror, and humanitarian consequences including refugee flows to Pakistan and Iran and internal displacement. Scholarly assessments by institutions such as the Brookings Institution, RAND Corporation, and the Special Inspector General for Afghanistan Reconstruction evaluated costs, governance failures, and lessons for future engagements. Debates continue over counterterrorism efficacy, the role of drone policy, and implications for U.S. relations with regional powers including Russia and China. Awards and recognition for service include the Purple Heart and Distinguished Service Medal bestowed on U.S. personnel, while legal and ethical inquiries have examined detention and targeting practices under Guantanamo Bay detention camp-era legacies. The episode remains central to discussions in U.S. foreign policy, civil-military relations, and international security studies.
Category:Wars involving the United States Category:War on Terror