The Soviet Union tests its first nuclear device
The device known as RDS-1 was detonated at the Semipalatinsk test site in the Kazakh steppe, several years earlier than most American estimates had expected, and detected by American air sampling. Its design owed a great deal to intelligence obtained from the Manhattan Project. The immediate strategic consequence was the end of the American monopoly and the decision, taken in the following months, to proceed with thermonuclear weapons; the political consequence was the atmosphere in which NSC-68 was written and accepted.
Historical — it happened, and the record is settled.
Subjects
- NSC-68 · policy · not located
Evidence
Partly verified — Core facts are sourced; some optional detail is deliberately absent.
NSC-68: United States Objectives and Programs for National Security
Supports the 1950 date, the authorship associated with Paul Nitze, the argument for a large sustained peacetime build-up and the indivisibility framing of the confrontation. V55 verification basis: NOT consulted — www.archives.gov is blocked by the environment's egress proxy; nothing is quoted from the document and no budget figure is given.
United States National Security Council; declassified 1975 · 1950-04 · Partly verified
NSC-68, April 1950, held among the papers of the Truman administration and published after declassification in 1975