During the Second World War and the subsequent Cold War, foreign agents conducted intelligence-gathering, sabotage, and subversive operations inside neutral countries aimed at damaging their opponents' interests. The essays contained in this collection analyze the risks of espionage operations on neutral soil as well as the dangers such covert activities posed for the governments of neutral states. In striving to avoid involvement in the firing line of the Second World War or the front line of the Cold War, the contributors argue that neutral states developed security policies that focused on protecting their own sovereignty without provoking overt hostility from any of the great powers. This collection describes how the warring parties engaged in competition on neutral territory and analyzes how neutral governments rose to the existential challenge posed by international spies, their own venal officials, and even foreign assassins.

This collection analyzes how rival states used neutral territories as sites of clandestine competition during the Second World War and the Cold War. It also examines how neutral governments coped with challenges to national sovereignty posed by international spies, corrupt officials, and foreign assassins.

World War II left virtually no nation or corner of the world untouched, dramatically transforming human life and society. It prompted the unprecedented mobilization of whole societies and witnessed a scale of state-sanctioned violence that staggers the imagination, with more than 100 million casualties. The war resulted in an almost complete collapse of any norms geared toward avoiding the unnecessary loss of civilian life and shaped the worldview and psyches of generations. The Oxford Handbook of World War II broadens traditional narratives of the war and in the process changes our understanding of this epic conflict. Organized both chronologically and thematically and with particular attention to the pre- and post-war eras, the Handbook revises and extends existing scholarship. With chapters on the rise and fall of Nazi Germany, the land war in Western Europe, the Battle of Britain, the impact of war on the major combatants (Great Britain, France, the United States, Japan, and China), the Japanese attack on Pearl Harbor, the decision to use the atomic bomb in 1945, and the cultural responses to the war, the chapters span much of the twentieth century. They suggest areas of scholarly consensus, identify interpretative clashes, and propose agendas for further scholarly investigation, with an emphasis on interdisciplinary inquiry. For example, the end of the Cold War had a profound impact on the way World War II was understood. Many formerly closed records in the former Soviet Union and China were opened to scholars, facilitating a more complex view of the Soviet war effort and suggesting that Stalin's army did not simply triumph by overwhelming German forces with sheer numbers but mastered the demands of a vast and logistically demanding front. In conceptualizing the volume, editors Kurt Piehler and Jonathan Grant also sought out contributions on lesser known aspects of the war, such as the Bengal famine in India, the treatment of prisoners of war, the role of Middle Eastern nations, and the activities of non-governmental organizations in ameliorating suffering. Spanning the rise and fall of the Versailles system to the postwar reintegration of veterans and the eventual commemoration of the conflict and its victims, The Oxford Handbook of World War II marks a landmark contribution to the historical literature of war.

Compared to many of MI5's other double agents, HARLEQUIN’s career was very short-lived, lasting only for a few months in 1943. However, during that time he provided insights into the various parties involved in the Appeasement process in 1938; the Czech crisis of 1939; the enterprises of a Franco-American businessman who hosted the Duke and Duchess of Windsor’s marriage in France; the espionage activities of an aristocratic German family; Admiral Canaris, the head of the Abwehr – many of the Abwehr’s personalities with whom he had come into contact or had known about and the agents he employed – as well as relations between the disparate organisations of the German intelligence services – the Abwehr, Gestapo, and Sicherheitsdienst (SD), the intelligence arm of the SS. Furthermore, he revealed the German Armistice Commission’s involvement in espionage and their links to the Abwehr. MI5 shared this intelligence with the FBI and the Office of Strategic Services (OSS) before HARLEQUIN requested that he be returned to American custody where he remained for the rest of the war. His effectiveness as a double agent will be examined using newly-released official files as a primary source.