{"id":624868,"date":"2026-01-18T22:47:14","date_gmt":"2026-01-18T21:47:14","guid":{"rendered":"https:\/\/cronologia-universale.it\/march-1-1954\/"},"modified":"2026-01-18T22:47:14","modified_gmt":"2026-01-18T21:47:14","slug":"april-1947","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/april-1947\/","title":{"rendered":"April 1947"},"content":{"rendered":"<p>The number of America&#8217;s atomic weapons is considered such classified information that very few people know about it, and the number cannot be written down in any document. David Lilienthal, recently appointed head of the Atomic Energy Commission, returns from his first visit to Los Alamos and briefs President Truman on the matter. The maximum number of atomic bombs immediately available in the event of conflict is: 1. And it&#8217;s disassembled, but it can probably be reassembled quickly. Truman doesn&#8217;t want to believe it. He has just presented the Truman Doctrine to Congress. He suddenly realizes that the threat of destroying the USSR in the event of an invasion of Western Europe is a bluff. The exact configuration and design of the Hiroshima bomb has not been fully committed to paper, and remains mostly in the minds of the assemblers. Production of the Mark 3, the one used for Nagasaki, has begun.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The number of America&#8217;s atomic weapons is considered such classified information that very few people&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"class_list":["post-624868","post","type-post","status-publish","format-standard","hentry","category-fq-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>April 1947 - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/april-1947\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"April 1947 - 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