the great white fleets visits encouraged japan to
Great White Fleet Additionally, the voyage of the Great White Fleet demonstrated both at home and on the world stage that the U.S. had become a major sea power in the years after its triumph in the Spanish–American War, with possessions that included Guam, the Philippines, and Puerto Rico.[5] It was not the first flexing of U.S. naval muscle since that war, however; during the Algeciras Conference in 1906, which was convened to settle a diplomatic crisis between France and Germany over the fate of Morocco, Roosevelt had ordered eight battleships to maintain a presence in the Mediterranean Sea.[6] Since Japan had arisen as a major sea power with the 1905 annihilation of the Russian fleet at Tsushima, the deployment of the Great White Fleet was therefore intended, at least in part, to send a message to Tokyo that the American fleet could be deployed anywhere, even from its Atlantic ports, and would be able to defend American interests in the Philippines and the Pacific.[7][8]
Attack on Pearl Harbor Preliminary planning for an attack on Pearl Harbor to protect the move into the "Southern Resource Area" (the Japanese term for the Dutch East Indies and Southeast Asia generally) had begun very early in 1941 under the auspices of Admiral Isoroku Yamamoto, then commanding Japan's Combined Fleet.[38] He won assent to formal planning and training for an attack from the Imperial Japanese Navy General Staff only after much contention with Naval Headquarters, including a threat to resign his command.[39] Full-scale planning was underway by early spring 1941, primarily by Rear Admiral Ryūnosuke Kusaka, with assistance from Captain Minoru Genda and Yamamoto's Deputy Chief of Staff, Captain Kameto Kuroshima.[40] The planners studied the 1940 British air attack on the Italian fleet at Taranto intensively.[nb 7][nb 8]