David Kilcullen is the author of the highly acclaimed The Accidental Guerrilla and Counterinsurgency. A former soldier and diplomat, he served as a senior advisor to both General David H. Petraeus and Secretary of State Condoleezza Rice during the wars in Iraq and Afghanistan. In recent years he has focused on fieldwork to support aid agencies, non-government organizations and local communities in conflict and disaster-affected regions, and on developing new ways to think about complex conflicts in highly networked urban environments.