Pope Leo has called for an end to reliance on nuclear deterrence, describing it as 'illusory security' during remarks marking the 80th anniversary of the atomic bombing of Hiroshima. He urged the world to remember the devastation caused by nuclear weapons and to pursue dialogue over threats of mutual destruction. The pope's comments reflect a shift in the Catholic Church's position, which now condemns the possession of nuclear arms. His appeal coincided with a ceremony in Hiroshima attended by representatives from over 120 countries, though key nuclear powers were absent.