Hiroshima Mayor Kazumi Matsui issued a sharp rebuke to nuclear-armed nations on Thursday, warning that justifying atomic weapons as deterrence "simply pushes a world without nuclear weapons further into the distance" as the city marked the 81st anniversary of the atomic bombing that killed 140,000 people.
The ceremony comes at a precarious moment. Japan's hawkish Prime Minister Sanae Takaichi, attending the memorial for the first time as prime minister, pointedly declined to commit to maintaining Japan's postwar three non-nuclear principles when compiling new security documents later this year. She's previously advocated reviewing the principles to potentially allow nuclear weapons into the country.
The Human Cost Still Resonates
Matsui didn't mince words in his criticism of major powers. "Downplaying the inhumanity of nuclear weapons and accepting the use of force to pursue one's own prosperity risk cycles of violent retaliation that could ultimately result in another Hiroshima or Nagasaki," he told the 50,000 attendees, including representatives from some 120 countries and regions. A minute of silence was held at 8:15 a.m., the exact moment a U.S. B-29 dropped the bomb on the city.
The bombing of Hiroshima on Aug. 6, 1945, destroyed the city entirely. Three days later, a second bomb dropped on Nagasaki killed 70,000. Japan surrendered on Aug. 15, ending World War II and Japan's nearly half-century of aggression in Asia.
Survivors Face Fading Influence
The number of survivors has fallen to 91,105, about a quarter of the original number, with their average age exceeding 86. They've expressed frustration and worry over growing international support for nuclear deterrence, including from their own government. The youngest survivors were too young to clearly recall the attack, raising fears that memories will fade as the generation that witnessed the horror firsthand disappears.
Japan sits under the U.S. nuclear umbrella and has repeatedly sought Washington's reassurance for stronger protection. That dependence has created a painful contradiction: the government has rejected survivors' requests to sign the Treaty on the Prohibition of Nuclear Weapons or even attend its meetings as observers.
A Call for Different Choices
Takaichi said she'll take "a realistic approach" toward achieving a world where nuclear weapons are never used, within the framework of the United Nations' treaty to prevent the spread of nuclear weapons. But she fell short of expressing commitment to sticking with Japan's three non-nuclear principles in the future. Speculation swirls that her government may ease those principles when it compiles new security and defense documents later this year.
United Nations Secretary-General António Guterres offered a different vision in a written statement. "The horror of nuclear weapons is just one lesson of Hiroshima. Another is the need to build a world in which the threat or use of these weapons becomes unthinkable," he wrote. He added that Hiroshima "stands as an inspiring example of resilience, renewal and hope," and called for "dialogue over division, cooperation over confrontation and common security over narrow advantage."
Matsui urged each citizen to learn lessons from the past and take action, pushing back against political leaders who still consider nuclear deterrence realistic and legitimize violence.
Why This Matters:
The tension between Hiroshima's survivors and Japan's government exposes a fundamental question about how democracies balance security with moral responsibility. As the generation that experienced nuclear warfare firsthand dwindles to fewer than 100,000 people, their lived testimony about the human cost of atomic weapons risks being replaced by abstract strategic calculations. Japan's potential shift away from its three non-nuclear principles would mark a historic reversal of postwar pacifist commitments, made more troubling by the fact that it's happening over the objections of those who survived the very catastrophe the principles were meant to prevent. The growing international embrace of nuclear deterrence, despite decades of arms control efforts, suggests that without active citizen engagement and institutional accountability, the lessons of Hiroshima and Nagasaki may fade just as the survivors themselves do.