This is a groundbreaking work that brilliantly analyses the critical ethical challenges surrounding AI in defence. Mariarosaria Taddeo's masterful analysis, anchored in AI ethics and Just War Theory, provides an essential framework for navigating this complex landscape. This book is a must-read for anyone seeking to understand and shape the future of AI in defence. * Luciano Floridi, Founding Director, Digital Ethics Center, Yale University * If ever there was an industry that is in need of ethical and legal guidelines and guardrails it is military use of Artificial Intelligence. Mariarosaria Taddeo's book is the place to look for fresh and innovative thinking on this pressing subject. * Dennis Broeders, Professor of Global Security and Technology, Leiden University, the Netherlands * The book provides a detailed and timely framework for discussing and analysing the ethics of AI in defence. Researchers and policy-makers will find compelling arguments on how to understand and elaborate on AI-related realities in defence, which will inform their policy priorities. These insights are helpful inmaking sense of the blurred boundaries between the present and the future, as well as between the real and the imagined. * Justinas Lingeviius, International Affairs *