[thewopr]

It was public knowledge. Further, there is no such thing as New Zealand territory (or anyone's territory for that matter) in Antarctica. There are existing territorial claims, but they are overlapping and basically nullified by the Antarctic Treaty.

https://www.antarctica.gov.au/about-antarctica/law-and-treat...

[nuccy]

Moreover the New Zealand nuclear-free zone was established only in the 80s [1].

[1] https://en.wikipedia.org/wiki/New_Zealand_nuclear-free_zone