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Japa
n’s plutonium stockpile climbs to 46.1 tons in 2020, first rise in 3 years, July 10, 2021 (Mainichi Japan) TOKYO Japan was in possession of a total of some 46.1 metric tons of plutonium at home and abroad as of the end of 2020, the Cabinet Office reported to the Japan Atomic Energy Commission (JAEC) on July 9. The amount represents an increase of about 0.6 tons from the previous year.
The JAEC had stated that the country would reduce its plutonium stockpile under guidelines revised in July 2018, and the amount in its possession had been on a downward trend since then. The reported increase was the first in three years.