This is a detailed scholarly work covering the history of the peace movement in western society from the late eighteenth century to the Iraq war that began in 2003 (the book was published in 2008). After defining what peace is or could be, it discusses peace organisations, the rise of internationalism, debates on disarmament, the Cold War, Vietnam and the Middle East, the role of religion and democracy in both war and peace, responsibility to protect, and the way a “realistic pacifism” could be the best way forward. It attempts a non-partisan approach, but might come across to some readers as an apology for unilateral force, since there are always rogue states willing to rebel against an otherwise international consensus. I think the main message is that the elimination or at least reduction of armed conflict is always desirable and the best solution for everybody. Academic in style, it will be too heavy for many, but its content is certainly interesting and educational – a more distilled version would be welcome for a more general readership. It’s definitely required reading for anybody working in international relations and diplomacy.