From the Document: "After a rapid Taliban campaign to capture cities and territories formerly controlled by the Government of the Islamic Republic of Afghanistan (GIRoA), on August 15, 2021, the Taliban took Kabul and the President of GIRoA, Ashraf Ghani, fled the country. Information regarding the situation on the ground in Afghanistan and U.S. troop numbers is fluid and should be treated with caution. This Insight, which may be updated as circumstances warrant, is intended to assist Congress as it considers the military and defense implications of the withdrawal while events unfold."
CRS Insight, IN11726
Congressional Research Service: https://crsreports.congress.gov/