American Seeds of ABACC? Findley's Proposal to Create a Mutual Nuclear Inspections System Between Brazil and Argentina

After the first Indian peaceful nuclear explosion in 1974 international observers perceived Argentina and Brazil, long-time rivals in South America, as countries that could follow suit. Not only had they not signed the Nuclear Non-Proliferation Treaty (NPT), they had also not joined the Tlatelolco Treaty: the Latin American and Caribbean nuclear-weapon-free zone. In this context, the US began to reassess and tighten its nonproliferation policy, particularly throughout the Jimmy Carter presidency (1977–1981). Carter's foreign policy sought to stall Argentine–Brazilian efforts to master the nuclear fuel cycle, as well as push them toward Tlatelolco. These efforts ultimately proved unsuccessful. However, after a visit to Argentina and Brazil, US congressman Paul Findley suggested in 1977 that they consider a bilateral agreement, whereby they would agree to mutual inspections and renounce the right to conduct peaceful nuclear explosions. Even though it was disregarded at the time, these are the core ideas behind the creation of the Brazilian–Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) established in 1991. This article, then, seeks to fill the gaps in what today constitutes an unknown episode in the dense nuclear nonproliferation history of the 1970s.