In this sober and provocative book Glover examines the atrocities of the 20th century, such as Hiroshima, Nazism, the Chinese Cultural Revolution, Bosnia and all those others that are so depressingly familiar, in order to construct a kind of moral history of the period. Although these have been already extensively documented, Glover's approach is to look at the psychological causes that seem to provide a common thread. He explores the impact of increasingly sophisticated weapons on people's attitudes, finding that technological developments have facilitated a moral distancing on the part of those who develop and employ the various engines of war. Running in parallel with modern technological developments, Glover draws on the accounts of victims and perpetrators to show how potentially fatal, even primitive tendencies are also continually at work. Despite the awfulness of what he describes - and much of it inevitably makes for very grim reading - Glover remains optimistic that by understanding ourselves better we can create a better world and that, technology being now so advanced and efficient, any changes can and must come only from within and among ourselves. (Kirkus UK)