John Hiden 
Germany and Europe 1919-1939 [PDF ebook] 

This is the only short study in English to survey Germany’s foreign policy from a German viewpoint across the entire inter-war period. The approach, which sets Germany in her full European context, is not narrowly diplomatic; and it gives as much attention to the Weimar years of the 1920s as it gives to the more familiar story of Germany’s international relations under the Third Reich. John Hiden has now thoroughly revised his text to take account of new scholarship since the book first appeared in 1977.