This multi-year research program seeks to expand existing knowledge about the nuclear trajectories of Brazil and Argentina, with an emphasis on the transition from rivalry to cooperation. To do so we will collect and make available online thousands of official documents and produce over two hundred hours of oral histories with key actors on both sides.  This project looks at the past in the hope it will improve public debates on the nuclear renascence we see today in South America.  The program will also sponsor seminars, workshops, training activities and offer academic supervision.