information, experiences and technical visits," and vowed to improve bilateral nuclear cooperation. Sarney and Alfonsín were succeeded by Fernando Collor de Mello and Carlos Menem, respectively, and the latter two continued the bilateral collaboration. They met in Foz de Iguaçu in November 1990, when they signed the Declaration of Common Nuclear Policy (Declaração de Política Nuclear Comum). The document created the Common System for Accountability and Control (Sistema Comum de Contabilidade e Controle – SCCC), which would coordinate reciprocal inspections of nuclear facilities. This declaration also stated both countries’ willingness to commence negotiations with the IAEA on the implementation of nuclear safeguards and later join the regional regime of a nuclear-weapon-free zone of Latin America and the Caribbean as laid out by the Treaty of Tlatelolco. To coordinate and implement the SCCC, the two countries created, in 1991, the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (Agência Brasileiro-Argentina de Contabilidade e Controle de Materiais Nucleares – ABACC), established through the Guadalajara Bilateral Agreement for the Exclusively Peaceful Use of Nuclear Energy (Accordo Bilateral para Usos Exclusivamente Pacíficos da Energia Nuclear). ABACC was the first binational organization set up by Argentina and Brazil and to date remains the only existing binational safeguards organization in the world. In December 1991, the Quadripartite Agreement was established among Brazil, Argentina, the ABACC and the IAEA. It regulated IAEA inspections in Brazil and Argentina, while recognizing the SCCC and stating the need to avoid duplication of work between ABACC and the IAEA. The accord came into force in 1994 and it has been in force since then. Aside from cooperation on the nuclear energy front, Brazil and Argentina were also taking steps to promote economic integration, as demonstrated by the 1988 Treaty of Integration, Cooperation and Development (Tratado de Integração, Cooperação e Desenvolvimento) and the 1990 Minute of Buenos Aires (Ata de Buenos Aires). A common market – known as MERCOSUR / MERCOSUL – between Brazil, Argentina, Paraguay and Uruguay would be created in 1991 with the signing of the Treaty of Asunción. Recent developments On 22 February 2008, Brazil and Argentina announced the intention to build a binational nuclear fuel factory. A bilateral working group was then established to discuss this project, but no further developments have taken place. A leaked U.S. diplomatic cable dated 24 December 2009, reported Argentine concerns related to Brazilian nuclear ambitions. It stated that the Argentine foreign