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 follows the path of the North Atlantic Treaty Organization's (NATO) evolution in Afghanistan. The first section covers the initial two stages of the International Security Assistance Force's (ISAF) mission, and analyzes key issues in the mission: use of Provincial Reconstruction Teams to stabilize and rebuild the country; overcoming caveats placed by individual allies on the use of their forces; and managing the counter-narcotics effort. The next section of the report examines stages three and four of the ISAF mission which cover roughly the period December 2005 to the present. In this section, the debate to develop a refined mission statement and a new organizational structure is analyzed by looking at issues that are both political and military, such as securing more troops, the treatment of prisoners, and organization of command. By late 2006 as ISAF extended its responsibilities to cover all of Afghanistan, the allies began to realize that ISAF would require a greater combat capability than originally believed, and the mission began to change. This adjustment in mission is discussed through the perspective of several key allies. The final section of the report assesses ISAF's progress to date.

This report discusses Afghanistan's political transition; it was completed in December 2005, but insurgent threats to Afghanistan's government since then have escalated to the point that some experts are questioning the future of U.S. stabilization efforts. U.S. stabilization measures focus on strengthening the central government and its security forces and on promoting reconstructing while combating the renewed insurgent challenge.