thanks; and I'm sure some level of spying happened, but idk if there was any actual tension between the countries, especially considering that the Argentinian president was one of the first people officially informed when Brazil achieved enrichment capabilities in the 80s and later on both countries joined a bilateral inspection agreement.

maybe things were different during the dictatorship

[–] marcos@lemmy.world 2 points 1 day ago

officially informed when Brazil achieved enrichment capabilities in the 80s

That one was about the official nuclear program, that wasn't intended to create nuclear weapons. The Brazilian nuclear weapons program was a secret out of the clearance level of the official nuclear program so there was never any interaction between them.

And yes, it was in the later 80s, when Brazil was trying to repair the damaged relations with Argentina.