Pakistan receives foreign aid from several different countries and international organisation. Since the start of the War in Afghanistan, the majority of the Aid comes from the United States.The Majority of US assistance to Pakistan is from the Coalition Support Fund which is reimbursement to Pakistan for expenses already incurred and compensation for facilities made available to the coalition forces such as the Shamsi Airfield and Dalbandin air bases by Pakistan as well as $4 billion has been billed to CSF Fund for the training and services provided by American Military and contractors to Pakistan Security Forces