Afghanistan: Post-Taliban Governance, Security, and U.S. Policy [November 22, 2011] [open pdf - 1MB]
"Stated U.S. policy is to ensure that Afghanistan will not again become a base for terrorist attacks against the United States. Following policy reviews in 2009, the Obama Administration asserted that it was pursuing a well-resourced and integrated military-civilian strategy intended to pave the way for a gradual transition to Afghan leadership from July 2011 until the end of 2014. To carry out U.S. policy, a total of 51,000 additional U.S. forces were authorized by the two 2009 reviews, which brought U.S. troop numbers to a high of about 99,000, with partner forces adding about 42,000. On June 22, 2011, President Obama announced that the policy had accomplished most major U.S. goals and that a drawdown of 33,000 U.S. troops would take place by September 2012. The first 10,000 of these are to be withdrawn by the end of 2011. […] To date, much of the development has been accomplished with foreign, particularly U.S., help, although donor aid is likely to decline as the transition proceeds. Through the end of FY2011, the United States has provided over $67 billion in assistance to Afghanistan since the fall of the Taliban, of which about $30 billion has been to equip and train Afghan forces. During FY2001-FY2011, the Afghan intervention has cost about $443 billion, including all costs. For FY2012, about $17 billion in aid (including train and equip) is requested, in addition to about $100 billion for U.S. military operations there. (See CRS [Congressional Research Service] Report RS21922, 'Afghanistan: Politics, Elections, and Government Performance', by Kenneth Katzman.)"
CRS Report for Congress, RL30588