The Group of Seven leaders on Friday made an unprecedented joint visit to a museum in Hiroshima documenting the devastation caused by a U.S. atomic bomb in 1945, signaling at the outset of their three-day summit their commitment to a world free of nuclear weapons.The visit by the leaders, including those from nuclear powers the United States, France and Britain, was a long-awaited event for atomic bomb survivors who hope that getting to know the consequences of a nuclear attack will add fresh impetus to stalled efforts to abolish nuclear arms.Japanese Prime Minister Fumio Kishida, who is ch…READ FULL ARTICLE