What makes a war just? What makes a specific weapon, strategy, or decision in war just? The tradition of Just War Theory has provided answers to these questions since at least 400 AD, yet each shift in the weapons and strategies of war poses significant challenges to Just War Theory. This book assembles renowned scholars from around the world to reflect on the most pressing problems and questions in Just War Theory, and engages with all three stages of war: jus ad bellum, jus in bello, and jus post bellum. Providing detailed historical context as well as addressing modern controversies and topics including drones, Islamic jihad, and humanitarian intervention, the volume will be highly important for students and scholars of the philosophy of war as well as for others interested in contemporary global military and ethical issues.

Evolutionary ethics - the application of evolutionary ideas to moral thinking and justification - began in the nineteenth century with the work of Charles Darwin and Herbert Spencer, but was subsequently criticized as an example of the naturalistic fallacy. In recent decades, however, evolutionary ethics has found new support among both the Darwinian and the Spencerian traditions. This accessible volume looks at the history of thought about evolutionary ethics as well as current debates in the subject, examining first the claims of supporters and then the responses of their critics. Topics covered include social Darwinism, moral realism, and debunking arguments. Clearly written and structured, the book guides readers through the arguments on both sides, and emphasises the continuing relevance of evolutionary theory to our understanding of ethics today.