The analysis by SIGAR finds that the U.S. government was not prepared to assist the Afghan army and police forces adequately. The U.S. lacked a comprehensive approach to security sector assistance and lacked a whole-of-government approach to develop a capable and self-sustaining Afghan security force. Read Reconstructing the Afghan National Defense and Security Forces: Lessons from the U.S. Experience in Afghanistan, SIGAR, September 2017.
The report is also available as an interactive online resource