There is a question that the history and philosophy of science has not adequately confronted, “what precisely is lost when war destroys the conditions under which science is practised?” We have extensive literature on how science is made, on the social organisation of laboratories, the role of tacit knowledge, the formation of scientific communities, and the slow accumulation of what Michael Polanyi called the republic of science. We have rather less to say, as a discipline, about how science is unmade. The arc of conflict from Kharkiv to Sana’a to Aleppo makes that omission no longer defensible. In Kharkiv, missile...