The creation of the ABACC demanded a long historical process involving the generation of trust and building up a strategic alliance between Brazil and Argentina in the nuclear sector. Rather than the results of the technical work, acknowledged as of international quality, the importance of the political process that led to the creation of an international agency for the control of nuclear materials is undeniable in the sphere of the relationship between Brazil and Argentina that, in this specific case, has become an example admired in several countries in the world.