Withdrawal of United States troops from Afghanistan (2020–2021)
The United States Armed Forces completed their withdrawal from Afghanistan on 30 August 2021, marking the end of the 2001–2021 war. In February 2020, the Trump administration and the Taliban, without the participation of the then Afghan government, signed the US–Taliban deal in Doha, Qatar, which stipulated fighting restrictions for both the US and the Taliban, and provided for the withdrawal of all NATO forces from Afghanistan in return for the Taliban's counter-terrorism commitments. The Trump administration's US–Taliban deal, and then the Biden administration’s decision in April 2021 to pull out all US troops by September 2021 without leaving a residual force, were the two critical events that caused the collapse of the Afghan National Security Forces (ANSF). Following the deal, the US dramatically reduced the number of air attacks and deprived the ANSF of a critical edge in fighting the Taliban insurgency, leading to the Taliban takeover of Kabul on 15 August 2021.