Pearl Harbor: Why Japan Attacked (And Why It Was Such a Big Mistake)
Think about what Japan was contemplating from a geographic and geometric perspective. Every time Japan extended its defense perimeter eastward or southward was like extending the radius of a circle: it expanded the sea area Japan’s fleet had to police by the square of the distance from the Japanese home islands, which lay at the empire’s center. And perversely, Tokyo had an insatiable appetite for more sea space. It was constantly extending the defensive frontier—including at far-flung places like Guadalcanal, in late 1942.