This memorandum is a compendium of comments about the Treaty of Tlatelolco made by different delegations at the UN. It includes statements by the delegates from the United States, Brazil, Ireland, Ethiopia, Austria, Italy, Pakistan, El Salvador, Mauritania, Iraq, Greece, Spain, Tanzania, Zambia, the Netherlands, Argentina, Venezuela, Sierra Leone, Canada, Jordan, Ecuador, Guyana, Colombia, Malta, Panama, Bolivia, Costa Rica, and Peru, in that order.

Alfonso Garcia Robles explained how the Mexican delegation tried to gather the support of the Latin American countries for the NPT draft. These countries prepared and presented modifications to the NPT text, and the United States and the Soviet Union accepted some of these proposals. Garcia Robles reported that the Argentinian and Brazilian representatives said they recognized the value of the NPT but would not support it if it kept its clause prohibiting peaceful nuclear explosions. The Ambassador also reported the Soviet positive reactions toward the Treaty of Tlatelolco. Garcia Robles recounted the skepticism of some delegations toward the NPT. He recommended not to sign the NPT in 1968 unless the Soviet Union signed Protocol II of the Treaty of Tlatelolco, which includes negative security assurances.

The treaty creating the Latin American Nuclear Free Zone (LANFZ) was signed at Tlatelolco, Mexico, on 14 February 1967. Taking a close look at key provisions, INR found that the entry into force provisions included loopholes which “unenthusiastic” states could use so the treaty did not cover their territory.

Nuclear proliferation in Latin America.

This is a document containing talking points for Secretary of State Alexander Haig's meeting with Deng Xiaoping. Topics addressed in the document include: Chinese exportation of uranium and heavy water to South Africa and Argentina; the intention to suspend the prohibition of arm sales to China; greater nuclear and security cooperation; the increase in Chinese arm sales to countries dependent on the Soviet Union; and the desire to open a new consulate in Shenyang.

This telegram made by the Brazilian Embassy in Buenos Aires, verifies U.S. pressure on Argentina’s nuclear program, especially through Canada, with whom Argentina had a strategic partnership in the nuclear field. The telegram goes into depth on factors that underlie Argentina's decision not to sign the NPT, and its efforts to import the materials necessary for its nuclear program.

This estimate updates the 1974 predictions, and analyzes the “earliest dates of the technical feasibility of possession of a nuclear device” of the Republic of China, Pakistan, South Africa, The Republic of Korea, Argentina and Brazil, among others.

With the term “weapons of mass destruction” having not yet fully come into general usage, this NIE used the term “special weapons” to describe nuclear, biological, and chemical weapons (formerly the term “special weapons” was sometimes used to describe nuclear weapons only). With numerous excisions, including the names of some countries in the sections on “East Asia and the Pacific” and “Central America,” this wide-ranging estimate provides broad-brushed, sometimes superficial, pictures of the situations in numerous countries along with coverage of international controls to halt sensitive technology exports to suspect countries.

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.

According to the 1985 report, the Argentines “have achieved at least a proof of principle of uranium enrichment via gaseous diffusion.” In other words, they had a workable system. Nevertheless, the enrichment plant would not be “fully operational until 1987-1988.” While the assessment of Argentine interest in nuclear weapons did not change, CIA analysts asserted that “Argentina continues to develop the necessary facilities and capabilities that could support a nuclear weapons development effort.”