Moreover, Hatoyama is set to expose a secret Cold War nuclear agreement that opened Japanese ports to US naval vessels carrying nuclear weapons, in contravention of Japan’s Three Non-Nuclear Principles, which have guided official policy since the late 1960’s. Last but not least, Hatoyama is postponing implementation of a bilateral agreement with the US to relocate a Marine Corps base on the island of Okinawa, from Futenma to Henoko, thereby causing confusion for America’s plan to relocate part of its forces on Okinawa to Guam.