In February and March 2009, the Obama Administration announced its overall plans to increase troop levels in Afghanistan and decrease troop levels in Iraq for 2009 through 2011. Using several Department of Defense (DOD) data reports, this report describes, analyzes, and estimates deployed troop strength from the 9/11 attacks to FY2012 to provide Congress with a tool to assess current and future DOD war funding requests; implications for the U.S. military presence in the region; and deployment burdens on individual service members and each of the services.

As interest in troop level deployments continues, there remains an increase of U.S. forces in Afghanistan. This report provides official Department of Defense (DOD) statistical information on U.S. forces now serving in Afghanistan with comparisons to earlier force levels. It also provides brief official information on the military units extended or schedule for the next rotation of duty into Afghanistan.

This report examines the role of United Nations Assistance Mission in Afghanistan (UNAMA) in Afghanistan and discusses the obstacles the organization faces in coordinating international efforts and explores related policy issues and considerations for the 112th Congress.