The mayor of Hiroshima on Sunday called on world leaders to accept that rising international instability has proven nuclear deterrence to be a "folly" as it marked the 78th anniversary of its atomic bombing by the United States.Hiroshima Mayor Kazumi Matsui's message at a ceremony came as the western Japan city reflects on hosting the Group of Seven major economies' summit in May, during which the leaders, including some from nuclear-armed countries, visited the peace park and its museum on the bombing's effects before releasing a statement backing deterrence principles.But while he welcome…READ FULL ARTICLE