What has kept the world safe from the bomb since 1945 has not been deterrence, in the sense of fear of specific weapons, so much as it's been memory. The memory of what happened at Hiroshima.
John Richard Hersey (June 17, 1914 - March 24, 1993) was an American writer and journalist. Born in Bejing, China to missionaries Roscoe and Grace Baird Hersey, his family returned to the United States when he was twenty years old. Hersey attended the Hotchkiss School, before Yale and graduate study as a Mellon Fellow at Cambridge. He obtained a summer job as a secretary for Sinclair Lewis in the summer of 1937, and, that fall, started work at Time. Two years later he was transferred to Time's Chungking bureau. During World War II he covered the fighting in both Europe (Sicily) and Asia (Battle of Guadalcanal), writing articles for Time, Life, and The New Yorker.