HIROSHIMA -- Hiroshima Mayor Kazumi Matsui called on the world to "immediately render all nuclear buttons meaningless" in his peace declaration at a ceremony on the 77th anniversary of the atomic bombing of the city on Saturday.
The presence of U.N. Secretary General Antonio Guterres marked the first time in 12 years that a sitting U.N. chief has attended the annual ceremony, which was held amid increased threats of nuclear weapons in the wake of Russia's invasion of Ukraine. Russia's ambassador to Japan was not invited to the ceremony.
