“Tsuboi was a leading figure among hibakusha in Japan,” Mimaki, 80, said at a news conference on June 9. “I’ll do my best as a person who worked with him.” The Japan Confederation of A- ...

Sunao Tsuboi, who survived the 1945 atomic bombing of Hiroshima and played a leading role in informing a global audience about the experience of a hibakusha, died on Oct. 24. He was 96. Tsuboi met ...