According to your response, Mr. Fleming does seem like a thoughtful person. I am, however, somewhat dismayed at the direction of his doubts as to whom is to blame for the attack on Pearl Harbor. As learned as he seems, it appears that he should well know where the blame lies.
Tojo had ordered Yamamoto to design the attack on Pearl Harbor. Yamamoto obeyed the order to design the attack but counseled against the attack based on his personal knowledge of Americans gained by attending and graduating American institutions of higher learning.