The Japanese
He designed it.
it was an unexpected suprise attack
Yes. Well at least some of them.
Admiral Yamamoto led the planning, Flight Leader Fuchida no doubt had to render his input with the aerial assault.
Just a carrier launched surprise attack.
Yamamoto Isoroku was the mastermind behind planning the attack on Pearl Harbor. The attack was carried out in the early morning hours of December 7, 1941.
Reconnasissance, preparation, training, execution.
Pretty sure Pearl harbor was attacked by the Japanese in 1947 to prevent the US from influencing the war in south Asia that Japan was planning... unless you know of another attack to specify on?
The internment camps were established to limit communication between Japanese-Americans and Japan due to a condern that the planning of the attack on Pearl Harbor could lead to a direct attack on the US mainland. There was no difinite connection that someone within the US was or was not involved in the planning of the attack.
One leader was Admiral Yamamoto, who did all the planning. And the other leader was Fuchinda, was was the leader of the flight.
because they did not know Japan were secretly planning a war in the pacific because attention was on the Germans