Interesting guest column by Reg Whitaker in Wesley Wark’s National Security and Intelligence Newsletter

The leading physicists mobilized in the Manhattan Project were on the one hand applying intelligence in the sense of the same pure quest for knowledge that had driven the discoveries of scientists from Galileo to Einstein. On the other hand as a military scheme, the Manhattan Project was an intelligence problem in the sense of secrets that had to be protected from enemy eyes, or indeed from any eyes, friendly or unfriendly, from outside the charmed circle of the initiated and security-cleared.