I take your point recedo, but the Nimrod's retired so not sure the comparison to Trident stands up.
Maybe maybe not . If it was published that UK had sent Nimrods down 27 years out of 30 since war, then Agrentina may conclude that while talking peace UK was actually targeting all their naval bases all of the time.
Now starting negotiations on something different. It starts off on basis that Uk has been lying all the time previously, thereby any agreement made Argentina can break and not trust what UK is saying given past expereiences.
Argentina assume UK lying when its not and act accordingly, 2500 dead later, people realise it was actually a misunderstanding because everybody assummed the worst all the time.
Once mistrust escalates it is difficult to de escalate.