Initially, ICAO’s security-related work focused on developing Standards and Recommended Practices (SARPs) for inclusion in Annex 17. Over the years, its work in the field of aviation security broadened and today is essentially carried out in three inter-related areas: policy initiatives, audits focused on the capability of Member States to oversee their aviation security activities, and assistance to States that are unable to address serious security deficiencies highlighted by ICAO audits.