This lengthy report was State Department Bureau of Intelligence and Research's contribution to the first National Intelligence Estimate on the nuclear proliferation, NIE 100-6-57. Written at a time when the United States, the Soviet Union, and the United Kingdom were the only nuclear weapons states, the “Fourth Country” problem referred to the probability that some unspecified country, whether France or China, was likely to be the next nuclear weapons state. Enclosed with letter from Helmut Sonnenfeldt, Division of Research for USSR and Western Europe, to Roger Mateson, 4 June 1957, Secret

A Directorate of Intelligence analysis, prepared in 1986, provides an interesting contrast with excisions in the NIEs on the indigenous program; it includes details on the major Navy, Air Force, and Army components of the indigenous program, including the nuclear submarine objective. As with the NIEs, the authors of this report saw no “political decision” on nuclear weapons and further noted President Sarney’s public statements against a weapons program. But a piece of political intelligence initially excised from this report suggested, rightly or wrongly, that Sarney may have been personally ambivalent.

The SNIEs from 1983 and the 1985 update emphasize Brazil’s quest for technological-industrial autonomy which in nuclear terms meant developing an indigenous program to master the fuel cycle, including uranium enrichment and plutonium reprocessing capabilities. In seeking those objectives, Brazil did not want to face any constraints, and its leaders were unresponsive to US or other pressures for safeguards on nuclear facilities. According to the 1985 report the prominent role of the military in nuclear activities, “the direction of Brazil’s nuclear r&d,” and the CNEN president’s “reputation of favoring a nuclear option” posed a “danger to US interests in Brazil.”

Brazilian nationalism has often posed a challenge to US official precepts on the way the world should work and these estimates convey the deep Brasilia-Washington gap over nuclear policy during the 1980s. The SNIEs from 1983 and the 1985 update emphasize Brazil’s quest for technological-industrial autonomy which in nuclear terms meant developing an indigenous program to master the fuel cycle, including uranium enrichment and plutonium reprocessing capabilities. In seeking those objectives, Brazil did not want to face any constraints, and its leaders were unresponsive to U.S. or other pressures for safeguards on nuclear facilities.

Union Carbide Nuclear Company updates their previous study on the ease with which other nations could secretly create nuclear weapon facilities using the gas centrifuge.

A source in President Giscard's staff informed the US embassy that Pakistan was determined to complete the reprocessing plant and was searching for another country willing to supply the necessary technology. Also discusses a developing nuclear deal between West Germany and Brazil.