Book excerpt: The Small Arms Survey is an independent research project located at the Graduate Institute of International Studies in Geneva, Switzerland. It serves as the principal international source of public information on all aspects of small arms and armed violence, and as a resource centre for governments, policy-makers, researchers, and activists. The Small Arms Survey 2007: Guns and the City offers new and updated information on small arms production, stockpiles, transfers, and measures, including a special focus on transfer controls. This year's thematic section explores the complex issue of urban violence with case studies on Burundi and Brazil as well as a photo essay by award-winning combat photographer Lucian Read. This edition also features chapters on lessons learned from the tracing of ammunition, the relationship between gun prices and conflict, and the role of small arms in South Sudan.