Contemporary warfare is increasingly waged in urban settings and is often characterized by asymmetry between the parties. This trend is only likely to continue in light of a more and more urbanized world. It is compounded by the fact that belligerents often avoid facing their enemies in the open, intermingling instead with the civilian population, putting civilian lives and infrastructure at risk. Eyal Weizman is an architect and academic who has spent much of his career writing and thinking about the interaction of violence and the built environment. He has worked extensively on the ways in which war is fought in built-up areas and on how architecture can design an environment that is either more or less conducive to urban warfare. Most recently, he has been developing the new field of forensic architecture, which aims to research incidents that unfold in urban areas, examine the architectural aspects involved and draw patterns from those stories. In this interview, Professor Weizman shares some of his reflections on war in cities with the Review.