"Operation Mexico" was the codename for a clandestine Argentine rendition program aimed at kidnapping and disappearing leaders of the Montoneros living in exile in Mexico City in the late 1970s. In 1978, members of that militant group who had already been taken prisoner and were being held in a clandestine prison in Rosario were forced to travel with intelligence agents to Mexico to identify their colleagues. The operation was intercepted and disrupted by Mexican authorities. To cover up the failed mission, the Argentine secret police executed 14 of the 15 prisoners who were aware of Operation Mexico.
The documents include a secret Argentine report that confirmed that Jaime Dri was the lone survivor of the prisoners who knew about the secret Mexico rendition mission.
In January 2008, the National Security Archive exposed "Operation Mexico," publishing declassified documents found in Mexican national archives from the Federal Directorate of Security. Those documents showed that Mexican security officers had arrested and interrogated two of the Argentine intelligence agents in January 1978 before deporting them and their two Montonero prisoners they had brought with them back to Argentina. The two were among those fourteen subsequently executed.