The document reports that the presidents of CNEN, Hervásio de Carvalho, and Nuclebrás, Paulo Nogueira Batista, had an unplanned meeting with the Argentine Foreign Minister, Pastor, which said “to consider the Brazilian-Argentine understanding [in the nuclear field] a fundamental issue for a inductive strategy of strengthening political and economic stability in the region to the extent that both countries would be in a stronger position to collaborate with their neighbors”.

According to a US document left behind by Cyrus Vance, Argentina had agreed to ratify the Treaty of Tlateloco, to accept full scope safeguards and to delay the construction of a reprocessing facility in exchange for US nuclear assistance and Brazil’s acceptance of a moratorium on the construction of a reprocessing facility. Commenting the paper, Foreign Minister Silveira defines US strategy as “irresponsible” and considers it as an encouragement to the rivalry and confrontation between Argentina and Brazil.

Abreu reports a conversation in which ambassador Camillión revealed President Videla’s desire to visit Brazil, implying that Itaipu was a sensitive issue, but of domestic nature. The Argentine government suggested a joint declaration on nuclear issues to turn away international suspicions on "the production of the bomb."

Meeting among the members of the Ministry of Foreign Relations, the Ministry of Energy, the National Commission of Atomic Energy and the Council of National Security on a nuclear cooperation agreement proposed by CNEA. The objective of the agreement was to steer away doubts about a hypothetical nuclear competition between Brazil and Argentina, after Jimmy Carter was elected president in the US. Most participants of the meeting were contrary to a nuclear cooperation with Buenos Aires.

This cable summarizes Ambassador Ricupero’s mission to Argentina, where he conveyed a report that Brazil had mastered uranium enrichment. President Alfonsín’s letter of reply is included.

This newspaper article discusses an underground nuclear test site being built at Serra do Cachimbo for the Brazilian military and claims that production of a nuclear weapon was "already under way." President Sarney denied the report.

This top-secret document describes the secret parallel nuclear—or autonomous—program. The program resulted from the common effort of the three Branches of the Armed Forces—the Army, Navy and Air Force, plus CNEN and IPEN—under the coordination of the National Security Council. The objective was “to develop national competence to create conditions for wide-ranging use of nuclear energy, including naval propulsion and the production of nuclear explosives for peaceful purposes.

In 1978 the National Security Council identified the most important shortcoming of nuclear cooperation with Germany: the non-transfer of technology for the production of uranium hexafluoride (UF6). The lack of this crucial phase for the production of nuclear fuel led Brazil to decide to develop this method by national means, in view of the unwillingness of France and Great Britain to export said technology without a full scope of safeguards. The document reports how the government decided to create an autonomous nuclear project with regard to cooperation with Germany and free from the international safeguards regime. Coordinated by CNEN and implemented by the Institute of Energy and Nuclear Research (IPEN), this project represented the first phase of the “parallel” nuclear program whose objective was the autonomous mastery of the nuclear cycle.

Outline of the government of Brazil’s decision to acquire all phases of the cycle of production of nuclear fuel through cooperation with a foreign government, in this case the Federal Republic of Germany. Reference is made to the need to develop uranium enrichment technology in accordance with the 1967 nuclear policy, which had not yet been implemented.

Guidelines for the Brazilian nuclear policy in Costa e Silva’s government (1967-1969) and defines the diplomatic attitude of Brazil regarding the negotiations of the Non-Proliferation Treaty (NPT). During the meeting of the National Security Council, participants agreed on the need to cooperate with another country to start a national nuclear program. On the NPT negotiations, the members of the National Security Council agreed to establish a condition to adhere to the Treaty: the defense of the right to develop peaceful nuclear explosions. Several ministers defended the possibility of using nuclear energy in the future for international security reasons.