Mark Downes is the Assistant Director of the Geneva Centre for the Democratic Control of the Armed Forces (DCAF) and Head of the International Security Sector Advisory Team (ISSAT). ISSAT is a multi-donor initiative that brings together security and justice reform expertise, from the developmental, security, defence and diplomatic domains, in order to provide the international community (AU, EU, UN and donor countries) with comprehensive advice both on the technical and the process aspects of supporting security and justice reform, mainly in post-conflict contexts. He previously worked for the OECD DAC where he was responsible for conceptualizing and developing the OECD DAC Handbook on Security Sector Reform (SSR). He has published widely on security issues, has experience as an SSR and DDR trainer; and has worked on security and justice reform in a number of different contexts. He also previously served as Head of the Strategic Development Unit within the Law Enforcement Department of the OSCE Mission to Serbia and Montenegro (2002-2004). He is also an editor of the journal Stability: International Journal of Security and Development.