What inspired the sneak attack on pearl harbor

It may have been inspired by a Japanese saying, "A tiger goes out two thousand miles and returns without fail."

Explanation:

Japanese torpedo bombers flew just 50 feet above the water as they fired at the U. S. ships in the harbor

It may have been inspired by a Japanese saying, "A tiger goes out two thousand miles and returns without fail." Japanese torpedo bombers flew just 50 feet above the water as they fired at the U. S. ships in the harbor, while other planes strafed the decks with bullets and dropped bombs.