Explore the chilling six-week diplomatic descent from the assassination of Archduke Franz Ferdinand to the outbreak of the First World War. This pivotal collection, edited by Imanuel Geiss, presents the *Selected Documents*—telegrams, memoranda, and communiqués—that chart the crisis hour-by-hour. It provides crucial primary-source evidence for scholars and readers to confront the mechanisms of the July Crisis and the complex, heated debate over which Great Power bore the greatest responsibility for the global catastrophe.