Japan's decision to attack the United States in 1941 is widely regarded as irrational to the point of suicidal. How could Japan hope to survive a war with, much less defeat, an enemy possessing an invulnerable homeland and an industrial base 10 times that of Japan? The Pacific War was one that Japan was always going to lose, so how does one explain Tokyo's decision? Did the Japanese recognize the odds against them? Did they have a concept of victory, or at least of avoiding defeat? Or did ...