Book excerpt: In an area where in-depth studies of Hitler's relations with Nazi Germany's allies, and the failure of Nazi Germany to make more effective use of them during the war, are scant, this is a survey that looks at the Soviet Union, Japan, France, Italy, Spain, Romania and Hungary and their relationship to Nazi Germany. Using a comparative approach, seven case studies examine themes such as co-operation and resistance, military and economic aid, treatment of Jews, relations with the enemies and the popular sentiment towards Germany. Jonathan Adelman has provided students of the Second World War with a welcome mine of information and a unique perspective on a much-studied topic.