From the Document: "U.S. security cooperation with Central Asian states may evolve in light of the U.S. withdrawal from Afghanistan. On September 1, 2021, the U.S. embassy in Dushanbe announced a project to construct new border guard facilities in Tajikistan along the Tajik-Afghan-Uzbek border. The United States has overflight agreements in place with all Central Asian countries other than Kyrgyzstan. Some speculate that the United States may request access to bases in the region to support counterterrorism operations in Afghanistan. Russia has expressed opposition to a U.S. military presence in Central Asia, however. Following a CSTO [Collective Security Treaty Organization] summit held in Dushanbe on September 16, 2021, the government of Kazakhstan reportedly stated that President Kassym-Jomart Tokayev 'supported the joint CSTO position that the placement of Afghan refugees or foreign military bases on our countries' territories is unacceptable.' Prior to the Taliban takeover of Afghanistan, the United States expanded its diplomatic engagement to encompass multilateral meetings involving Afghanistan and Central Asian countries. In May 2020, officials from the United States, Uzbekistan, and Afghanistan held an inaugural trilateral meeting to discuss deepening cooperation on regional security and other issues. A similar meeting between the United States, Tajikistan, and Afghanistan took place in March 2021. In July 2021, the United States, Afghanistan, Uzbekistan, and Pakistan announced a new quadrilateral format focused on enhancing regional connectivity. It remains unclear whether the United States will establish diplomatic relations with the Taliban government, as does the future of such multilateral meetings."
CRS Report for Congress, R46924
Congressional Research Service: https://crsreports.congress.gov/