War in Afghanistan: Strategy, Military Operations, and Issues for Congress [June 8, 2010] [open pdf - 2MB]
"With a deteriorating security situation and no comprehensive political outcome yet in sight, most observers view the war in Afghanistan as open-ended [...] For the United States, the war in Afghanistan concerns the security of Afghanistan and the region, including denying safe haven to terrorists and helping ensure a stable regional security balance. For regional states, including India and Russia as well as Afghanistan's neighbors Pakistan and Iran, the war may have a powerful impact on the future balance of power and influence in the region [...] Since 2001, the character of the war in Afghanistan has evolved from a violent struggle against al Qaeda and its Taliban supporters to a multi-faceted counterinsurgency (COIN) effort. In the aftermath of the terrorist attacks of September 11, 2001, the United States launched Operation Enduring Freedom (OEF) in order to end the ability of the Taliban regime to provide safe haven to al Qaeda and to put a stop to al Qaeda's use of the territory of Afghanistan as a base of operations for terrorist activities [...] In his December 3, 2009, speech President Obama identified several objectives in Afghanistan and Pakistan: (1) disrupt, dismantle, and defeat al Qaeda; (2) deny al Qaeda a safe haven; (3) reverse the Taliban's momentum and deny it the ability to overthrow the government; and (4) strengthen the capacity of the Afghan security forces and government to better protect and serve population centers."
CRS Report for Congress, R40156