The decision to pull U.S. troops out of Afghanistan was part of an agreement former President Donald Trump forged with the Taliban in February 2020. Under that deal, the U.S. agreed to withdraw all its forces. In exchange, the Taliban promised to sever its ties with al-Qaida and end its attacks on American forces. The Trump administration began a drawdown of U.S. forces, and
about 2,500 U.S. troops remained by the time he left office.
When Biden took office, he decided to go ahead with plans to end U.S. involvement in the war but delayed the withdrawal of U.S. troops.
Taliban fighters entered Afghanistan's capital on Sunday, signaling a collapse of the Afghan government two decades after U.S. invaded the country.
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