Dr. David Fisher teaches ethics and war at King's College London. He was a senior official in the UK Ministry of Defence, Foreign Office and Cabinet Office where he was defence adviser to the prime minister. He is the Co-chairman of the Council on Christian Approaches to Defence and Disarmament and a regular contributor to books and journals on defence an ethical issues. His most recent book — Morality and War - Can War be Just in the Twentieth-first Century? — won the 2012 W.J. Mackenzie prize as best book of the year in political science.