On a brisk Saturday in Sydney, the auditorium fell silent as Keiko Ogura, an 88-year-old survivor of the Hiroshima atomic bombing, took the stage. Her voice, steady but urgent, carried the weight of history and the immediacy of a warning. "In the near future, no (atomic bomb) survivors are living," she told the crowd, her words echoing through the room. Ogura wasn’t just recounting the past—she was issuing a call to action, one she hoped would resound far beyond Australia’s borders.
Ogura’s lecture, delivered on August 16, 2025, marked yet another chapter in her decades-long mission to abolish nuclear weapons. According to Jiji Press and Kyodo News, Ogura survived the atomic bomb dropped on Hiroshima on August 6, 1945, when she was just eight years old. The attack killed about 140,000 people by the end of that year and left countless others, like Ogura, scarred physically and emotionally. Now, as the number of living survivors dwindles, their testimonies have taken on a new urgency.
“We have to work right now. You can do that. I can pass my baton to you, young people,” Ogura urged, her plea directed especially at the next generation. She has shared her story in English across 50 countries, meeting with world leaders—including during the Group of Seven summit in Hiroshima in May 2023—in the hope that her experiences might inspire decisive action. During her Sydney lecture, Ogura used photos and illustrations to bring to life the devastation she witnessed: the sudden destruction of her city, the cries of the dying, and the infamous "black rain"—rainfall laced with radioactive particles that fell after the explosion, contaminating survivors and the land alike.
Ogura’s testimony was as vivid as it was harrowing. She recalled the chaos that followed the bombing: "Many people died in front of me, shouting, 'Help me!' and 'Give me water!'" she said, according to Kyodo News. The memory of those desperate pleas, she explained, has never faded. Her message, though rooted in tragedy, was clear: "Nuclear weapons should not be used any more. I wish the total nuclear ban will be accomplished before I die."
Her concern is not just historical. Ogura warned that approximately 12,000 nuclear weapons still exist worldwide, a number that underscores the persistent threat these arms pose. She also expressed worry over political developments in her homeland. Some Japanese politicians, she noted, have advocated for Japan to arm itself with nuclear weapons—a prospect she finds deeply troubling.
The impact of Ogura’s words was palpable. Cole Vale, a local student in attendance, told Kyodo News, "Her testimony is powerful. I don't think we need nuclear weapons." For many in the audience, Ogura’s story transformed the abstract horrors of nuclear war into something immediate and personal. Martin Graham, an official from New South Wales’ education bureau, reflected, "History is not just something we study, something we put forward to the next generation."
Ogura’s efforts are part of a broader movement by hibakusha—the Japanese term for atomic bomb survivors—to ensure their experiences are not forgotten. In early August 2025, just before the 80th anniversary of the Hiroshima bombing, another survivor, Toshiyuki Mimaki, met with elementary school students at the Nakajima community center, near ground zero. Mimaki, now 83 and co-chair of Nihon Hidankyo—a Nobel Peace Prize-winning organization of atomic bomb survivors—shared his own memories of that fateful day.
"Kids like you were all burned to death, because houses caught fire and collapsed, trapping people underneath. Many, many died. Poor kids. They never got the chance to watch TV, because there was no TV at that time, and they never knew about bullet trains," Mimaki told the students, as reported by NPR. His own survival was a matter of chance: he was three years old and on his family’s farm, about 10 miles outside Hiroshima, when the bomb fell. The next day, he and his mother entered the city to search for his missing father, exposing themselves to radioactive fallout.
Mimaki’s organization, Nihon Hidankyo, was recognized with the Nobel Peace Prize in 2024 for its relentless advocacy against nuclear weapons. The group has helped foster what the Norwegian Nobel Committee described as a "nuclear taboo"—the widespread belief that nuclear weapons are so morally repugnant that they must never be used again. Yet, as Mimaki pointed out, the world’s commitment to nuclear disarmament seems to be faltering.
East Asia is now embroiled in a new arms race, with nuclear powers expanding their arsenals, according to NPR. Japan, despite being the only country to suffer atomic attacks, continues to rely on the U.S. "nuclear umbrella" for its security. This reliance has led Japan to abstain from signing the Treaty on the Prohibition of Nuclear Weapons (TPNW), an international agreement that would make the development, possession, or use of nuclear arms illegal. As Toshiyuki Mimaki recounted, he met with Prime Minister Shigeru Ishiba in January 2025 to urge Japan to at least attend TPNW meetings as an observer, but the government declined, citing security concerns.
This contradiction—calling for abolition while depending on nuclear deterrence—highlights the complexity of the issue. As Toby Dalton of the Carnegie Endowment for International Peace explained to NPR, "There's going to be a hardening of these two camps, these two views of the world and their different understanding and value of nuclear deterrence." Non-nuclear states, he added, have little leverage to compel nuclear powers to disarm. "So ultimately, while the moral authority of the hibakusha is really important, the change needs to come from within and between the states with nuclear weapons."
With the average age of hibakusha now over 86, time is running short. Fewer than 100,000 survivors remain, and their numbers are dwindling rapidly. Mimaki, recognizing the urgency, is organizing one final campaign: he hopes to gather all surviving members of Nihon Hidankyo this fall to surround Japan’s Parliament building and demand the abolition of nuclear weapons.
The voices of Ogura, Mimaki, and their peers are more than just echoes from the past—they are warnings for the future. As the world faces new nuclear dangers and old tensions resurface, their testimonies serve as both a reminder of the horrors of war and a plea for a safer, saner world. Whether their baton will be taken up by the next generation remains to be seen, but their determination is undiminished.