From the Executive Summary: "December 2015 marks nearly one year into United States Forces - Afghanistan (USFOR-A) Operation Freedom's Sentinel (OFS) and the North Atlantic Treaty Organization (NATO)-led Resolute Support (RS) mission focused on developing Afghan institutional capacity to enhance security and stability across Afghanistan. During the June 1 through November 30, 2015, reporting period, the Afghan National Defense and Security Forces (ANDSF) endured a tough fight against a determined insurgency. Despite challenges this fighting season, the ANDSF have proven their willingness to fight and to learn from mistakes during their first year with full responsibility for securing the Afghan people. U.S. forces in Afghanistan continue to conduct two narrow, well-defined, and complementary missions: training, advising, and assisting the ANDSF and supporting counterterrorism operations against the remnants of al Qaeda and its associates. In order to preserve hard-fought gains and help the ANDSF continue to develop and to provide stability and security in Afghanistan, on October 15, 2015, President Obama announced that U.S. forces will maintain their current posture of 9,800 military personnel through most of 2016. By the end of 2016, rather than draw down to a Kabul-only U.S. military presence as previously envisioned, the United States will maintain 5,500 military personnel in Kabul and Bagram, in addition to a limited presence in the east and south of Afghanistan. This decision provides U.S. forces the access and the reach required to implement these two missions effectively in the next year and reflects the U.S. government's enduring commitment to Afghanistan and its security forces."
U.S. Department of Defense: http://www.defense.gov/