From handshakes on the White House lawn to Picasso's iconic dove of peace, the images and stereotypes of peace are powerful, widespread and easily recognizable. Yet if we try to offer a concise definition of peace it is altogether a more complicated exercise. Not only is peace an emotive and value-laden concept, it is also abstract, ambiguous and seemingly inextricably tied to its antithesis: war. And it is war and violence that have been so compellingly...