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.
☆NSNS: Secret Japan nuclear bomb program covered up using nuclear power industry — Enough to build arsenal larger than China, India and Pakistan combined
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.