**Preservation and War** What are the moral limits to war? The destruction of heritage has, at least since the Enlightenment, been considered a threshold beyond which military action becomes unjust, even criminal. Centuries before modern preservation laws, it was military jurists like Emmerich de Vattel who helped establish the notion that governments at war had a legal duty to protect heritage—including that of their conquered enemies. The regulation of modern warfare in many ways preceded and shaped that of modern preservation. **Speakers** Azra Akšamija, Lucia Allais, Leila A. Amineddoleh, Zaki Aslan, Erica Avrami, Zainab Bahrani, Julián Esteban-Chapapría, David Gissen, Rodney Harrison, Nikolaus Hirsch, Mark Jarzombek, Laura Kurgan, Rosalind C. Morris, William Raynolds, Laurie Rush, Clive van den Berg, and Tim Winter. Organized by Jorge Otero-Pailos and the Historic Preservation Program.