On February 29, 2020, the U.S. and the Taliban signed a peace agreement titled the Agreement... with provisions including the withdrawal of all regular American and NATO troops from Afghanistan
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The deal was supported by China, Pakistan, and Russi...
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The Trump administration agreed to an initial reduction from 13,000 to 8,600 troops by July 2020, followed by a full withdrawal by May 1, 2021 if the Taliban kept its commitments. The Biden administration, however, said the US would not begin withdrawing until May 1 and would complete the withdrawal before September 11. On July 8, Biden specified a U.S. withdrawal deadline of August 31

https://en.m.wikipedia.org/wiki/Withdrawal_of_United_States_troops_from_Afghanistan_(2020%E2%80%932021)