This video says about itself:
A New Source of Fukushima Radiation Was Just Found, Now What?
21 October 2017
TOKYO — The decision Jan. 16 to automatically extend a nuclear agreement with the U.S. came as a relief to a Japanese government worried about the prospect of renegotiating the basis for a cornerstone of its energy policy. But friction remains over a massive store of plutonium that highlights the problems with the nation’s ambitious nuclear energy plans: here.