U.S., criticized for helping Japan over plutonium, will stop.

Reports on the practice of the United States supplying technology to help Japan in its nuclear program, despite contradictory official statement. Greenpeace report on U.S. violation of Nuclear Nonproliferation Act; Announcement of U.S. Energy Department on curtailment of aid; Japan's statement on plutonium use; Description of nuclear reactors; Allegations against U.S. and Japan.