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”.

Cyrus Vance - apparently unintentionally - left behind this document while meeting with Brazilian President Geisel. It lays out US negotiations with Argentina 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.

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.

President Alfonsín of Argentina and President Sarney of Brazil declare their commitment to peaceful nuclear energy cooperation and mutual guarantees.

In this memorandum, General Director for Nuclear and Disarmament Affairs Adolfo Saracho reports on a Brazilian airplane's flight over the uranium enrichment plant at Pilcaniyeu.

In this cable to Buenos Aires, Ambassador Vazquez reports that he requested a meeting with Minister Olavo Setúbal after General Leonidas Pires Gonçalves suggested that he would support a Brazilian nuclear weapons program. Vazquez also discusses a conversation with the Brazilian Foreign Minister's chief of staff, who told Vazquez that General Leônidas Pires refuted the reports of a Brazilian atomic bomb.