U.S. President Barack Obama stands behind Japanese Prime Minister Shinzo Abe as he speaks on Kilo Pier overlooking the USS Arizona Memorial, part of the World War II Valor in the Pacific National ... 較多U.S. President Barack Obama stands behind Japanese Prime Minister Shinzo Abe as he speaks on Kilo Pier overlooking the USS Arizona Memorial, part of the World War II Valor in the Pacific National Monument, in Joint Base Pearl Harbor-Hickam, Hawaii, adjacent to Honolulu, Hawaii, Tuesday, Dec. 27, 2016, as part of a ceremony to honor those killed in the Japanese attack on the naval harbor. (AP Photo/Carolyn Kaster) 較少