This is not true. NZ is totally isolated … and long may that last.
A few years ago now Kiwiland decided that they were not going to maintain a navy and other arms of the conventional military service.
There were numerous vocal critics, including Australia who were hoping to sell them some hardware, whose argument was that without an navy etc NZ would become strategically irrelevant.
This was very well refuted by the proponents who said NZ was strategically irrelevant.
Which gives me another excuse to post: Gruen: Australia’s Invade New Zealand Day