Helen Frowe is Professor of Practical Philosophy and Knut and Alice Wallenberg Scholar at Stockholm University, where she directs the Stockholm Centre for the Ethics of War and Peace. Her books include Defensive Killing, The Ethics of War and Peace: An Introduction, 3rd edn. and, with Derek Matravers, Stones and Lives: The Ethics of Protecting Heritage in War. She is the co-editor of Heritage in War: Ethical Issues, Oxford Handbook of Ethics of War and How We Fight: Ethics in War. She was the recipient of the 2023 Elizabeth D. Rockwell Prize and 2019 Marc Sanders Prize in Political Philosophy.