It begins with a (mostly fictitious) meeting between the president and his advisors to draw the reader into the drama of the war, and then returns to the beginning of the war to give context to how events have progressed so that Truman has been put in the spotlight to make the decision. The seven chapters that the book is divided into cover the length of time from the start of Hitler’s invasion until the aftermath of the bomb on Hiroshima, and focus mainly on American-Japanese relations throughout the war. Europe isn’t focused on nearly at all, because the decision to drop the bomb was barely influenced by European relations.
Walker states his thesis (very direct and easily picked out, even by a reader who isn’t necessarily looking for it) in the beginning, after his first illustration of Truman. “The considerations that led to Hiroshima were much more complex and much less clear-cut than the conventional view suggests” (Walker 6). However, the thesis is also inserted into the narrative with great precision of skill, and doesn’t pull the reader out of the proceedings of events, instead simply stating the purpose of the first cabinet meeting illustration and heralding what Walker’s ultimate purpose is for telling this