The United States deliberately allowed Japan access to the United States’ most secret nuclear weapons facilities while it transferred tens of billions of dollars worth of American tax paid research that has allowed Japan to amass 70 tons of weapons grade plutonium since the 1980s, a National Security News Service investigation reveals. These activities repeatedly violated U.S. laws regarding controls of sensitive nuclear materials that could be diverted to weapons programs in Japan. The NSNS investigation found that the United States has known about a secret nuclear weapons program in Japan since the 1960s, according to CIA reports.
The diversion of U.S. classified technology began during the Reagan administration after it allowed a $10 billion reactor sale to China. Japan protested that sensitive technology was being sold to a potential nuclear adversary. The Reagan and George H.W. Bush administrations permitted sensitive technology and nuclear materials to be transferred to Japan despite laws and treaties preventing such transfers. Highly sensitive technology on plutonium separation from the U.S. Department of Energy’s Savannah River Site and Hanford nuclear weapons complex, as well as tens of billions of dollars worth of breeder reactor research was turned over to Japan with almost no safeguards against proliferation. Japanese scientist and technicians were given access to both Hanford and Savannah River as part of the transfer process.