The U.S. program of assistance to Afghanistan is intended to stabilize and strengthen the Afghan economic, social, political, and security environment so as to blunt popular support for extremist forces in the region. Since 2001, nearly $38 billion has been appropriated toward this effort. More than half of U.S. assistanceroughly 54%has gone to security programs, mostly the training and equipping of Afghan forces. Another 32% has gone to development and humanitarian-related activities from infrastructure to private sector support.