Operation Iraqi Freedom succeeded in overthrowing Saddam Hussein, but Iraq remains violent and unstable because of Sunni Arab resentment and a related insurgency, as well as increasing sectarian violence. According to its November 30, 2005, “Strategy for Victory,” the Bush Administration indicates that U.S. forces will remain in Iraq until the country is able to provide for its own security and does not serve as a host for radical Islamic terrorists. This report discusses the background of the issue and examines several security challenges, response, and other policy options for the U.S.