You're talking as if this would be a war between states, with the Geneva Convention rules applying
From the Argentines point of view they would be just reasserting control over a rebel province, the Geneva convention won't apply and any resistance by the locals will simply be criminal behaviour - and treated as such. Possibly through the courts, but as already said, given Argentinian history expect a lot of disappearances, especially from the back door of aircraft over the sea while drugged.
Whether anyone is actively spying or not will be irrelevant - the fact is anyone perceived to be a threat to Argentine rule will be at risk. Under the rule of Miss Piggy, civil liberties seem to be getting a low priority again