Why didn't it?
Key point: Japan should not have antagonized America.
At 7:45 AM on the morning of December 7, 1941 Commander Mitsuo Fuchida gazed exultantly from the rear seat of his B5N bomber at the serene vision of Pearl Harbor below him, it’s defenses unprepared for the onslaught about to befall them. He then rolled back his bomber’s canopy and fired off a dark blue “black dragon” flare, signaling for the 182 combat aircraft behind him to press the attack. ...
Read this story at The National Interest