First published in 1984, this study examines closely the shifting attitudes towards, and theories concerning, imperialism, from the colonial wars of the late nineteenth century to America's involvement in Vietnam. This lucid investigation encompasses the World Wars, the disintegration of the Colonies and the Cold War. It also gives fascinating insight into the theories of imperialism advocated by such diverse writers as Hobson, Wilshire, Angell, Brailsford, Luxemberg and Lenin. Throughout, the author objectively evaluates the theory that capitalism is a cause of aggression - a fundamental tenet of anti-imperialist writers. It is Norman Etherington's contention that further investigations into the sources, causes and effects of imperialism can only take place if the various theories concerning it are analysed. A fascinating and detailed study, this reissue will be of particular value to students interested in the theories and history of imperialism.