Soenke Neitzel is Professor of International History at the London School of Economics, having also held positions at the universities of Glasgow, Saarbrucken, Bern and Mainz.. He is the author of seven books, including Tapping Hitler's Generals and Soldaten. Harald Welzer is a sociologist and social psychologist, Professor for Transformation-design at the University of Flensburg, as well as Executive Director of the foundation FuturZwei. His main foci of research and teaching are memory, group violence and socio-cultural climate impact research. His books have been translated into 15 languages.