David Kilcullen is a leading expert on counter-insurgency policy. He served twenty-four years as a soldier, diplomat, and policy advisor for the Australian and United States governments. He was Special Advisor to the US Secretary of State in 2007–2009 and Senior Advisor to General David Petraeus in Iraq in 2007. He has provided advice at the highest levels of the Bush and Obama administrations, and has worked in peace and stability operations, humanitarian relief, and counter-insurgency environments in the Asia-Pacific region, Middle East, South Asia, and Africa. He is a well-known author, teacher, and consultant, advising the US and allied governments, international organizations, non-governmental organizations, and the private sector. His best-selling books The Accidental Guerrilla and Counterinsurgency are used worldwide by civilian government officials, policymakers, and military and development professionals working in unstable and insecure environments. Mr Kilcullen holds a PhD from the University of New South Wales. He is the founder and CEO of the consultancy firm Caerus Associates.