6.69. The system of accounting for, and control of, nuclear material applies to materials that contain significant quantities of fissile material in potentially extractable form [21?23]. The objective of IAEA nuclear safeguards is the timely detection of the diversion of significant quantities of nuclear material from peaceful nuclear activities to the manufacture of nuclear weapons or other nuclear explosive devices or for purposes unknown and the deterrence of such diversion by the risk of early detection. Geological disposal provides long term passive nuclear security, consistent with the objective of IAEA nuclear safeguards.