Within their war reserves, Israel keeps ammunitions, spare parts and replacement equipment needed for at least a month of intense combat.[14] The majority of the Israeli reserves are purchased from the US, due to their $3 billion in military aid from the US that requires 75% of the money to be spent on equipment purchased from the US.[15] In total, including the period since 1949 up to the present day the US has granted almost $84 billion in foreign aid to Israel.[16]