In a general sense that's actually a crucial point in terms of differences in public perception between the Aus and NZ population (and pollies).
And a point that is not debated to any extent or any further, to demonstrate why NZG's ideallistic or "niche" perspective for defence is severly flawed. If the NZ people could understand why Australia thinks and acts the way it does, we would be pretty much there in that the NZ population would be more supportive of spending more on defence.
(There are various reasons for this thinking; some of it is politics and ideology of the anti-Vietnam and anti-US foreign policy generation; some of it is due to Australia having a much longer association with the US than NZ has (certainly since WW2 or perhaps one might be able to say the seeds for Aus were sown before WW2 and Australia's emphasis on a home grown defence system rather than NZ's emphasis on the "Empire's" Singapore strategy), after all NZ continued to look to Britain and after the shocks of the 70's and 80's for NZ (EC/EEC, Opec, near economic collapse etc) and then the ANZUS bustup, IMO (while Aus always had their US focus) it's only really been since the 90's that NZG's of both hues have really been going for hell for leather to make up with the US and improve the relationship, now that the NZG realised what it was missing. So perhaps one could say a shift in mindset is occurring within NZ finally (starting to move towards Aus's thinking all along) and over time as the NZ population then start to think about the dynamics and consequences of the US and the Rising Powers in their backyards, and how NZ needs to improve its intel, survellience, patroling and responsiveness may we see more acceptance to fund defence properly and ultimately that will require better firepower capabilities as a natural progression etc).
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I agree with all of your analysis apart for the period of the Lange & Clark Labour Governments. Clark was a power in Lange's government and, as when she was PM, tried to play both ends against the middle and she was ideologically driven with a deep resentment of the US stemming from the Vietnam War era. As a PM she was as autocratic as Muldoon and as stubborn in that once she reached a decision, be it a good one or bad one, nothing would change it. So NZDF and NZ foreign policy suffered as a result. Secondly, a Green MP, Keith Locke is an avowed opponent of armed forces and he had a lot of influence on public opinion and in Green Party policy. Thirdly, when the Lange government introduced the nuclear legislation the vociferous US reaction, headed by the then Secretary of State, turned negative public support for the legislation into overwhelming public support. This was to such a degree that even today I think any politician trying to repeal the law would be signing their own political death warrant. Kiwi's are like Aussies don't pick a fight with us and especially don't back us into a corner.
Until the late 80's NZ, those then aged say 35+, still thought of Pomland as home, except the Maori population. Most of the immigrants from 1840 until the late 80's were from the UK and Western Europe, so it was very much a transplanted Pommy white society. That shaped the outlook of the politicians and the country. In WWII when Japan entered the war, the Australian troops were bought back to defend Australia. The 2nd NZ Division weren't, so Tiny Freyberg and his 40,000 thieves stayed in the desert. Churchill pressured the NZG to leave the 40,000 thieves in the Pommy 8th Army "for the good of the Empire". So NZ raised the 3rd Division and sent them to the Solomons. We did take a long time to realise that the Poms had shafted us and it was the younger generation that recognised it.
Where I think Clarke and Locke came from, was that they did not want us swapping one imperial "mother" for another. But they were flawed in their thinking and hence in the application of their subsequent policies. Whilst I am no great admirer of all things American (I have issues with the way they treat their troops, their discipline and their abilities) I do realise that it is in our best interest to be allied with them. However not to the extent that we have our foreign and domestic policy dictated to us. That was the public perception of the US reaction in 1985 - they were trying to tell us what we can and cannot do in our own country.
All alliances have to be built on trust and mutual respect. NZ has to show now that it can have some stability in it's foreign policy and it's defence policy. We have a very close and strong relationship with Australia but both countries also do pursue independant foreign policy goals as well as similar or joint goals. I think that NZ is starting to show that it has stopped the large swings in policy. The political attitude to the US as definitely warmed and it has been returned in kind. My general impression is that the average Kiwi is not overally fond of the US - I could be wrong but it is so in the circles I mix in. So a new era is entered.
In 1990 during the RNZN 50th Anniversary celebrations a parade by companies from Various RNZN version was made through Christchurch with drums beating, swords and cutlasses drawn, flags & colours flying and bayonets fixed, Very ceremonial occasion with all sorts of dignatories, national Naval, and local being present especially. Remember this was right in the middle of the Cold War between the US and NZ.
We had an after match function afterwards with BBQ, copious food and drink. In Christchurch at the time was based a permanent USN detachment VXE6 which provided air and logistic support to the US National Science Foundation for its work in researching in Antarctica. The support missions were jointly flow by USN C130 and RNZAF 130H crews. The USAF supplied Lockheed C141 Starlifter aircraft when needed, & the occasional C5B Galaxy. Missions are flown into McMurdo and the aircraft MUST CARRY enough fuel for a return to NZ (Invercargill) in case they cannot land due to weather conditions. SOP for ALL aircraft visiting McMurdo ex Christchurch.
RNZAF service personnel, NZ Army personnel RNZN and RNZNVR personnel worked alongside NZDF personnel to ensure the smooth and efficient operation of the summer program. Close relations existed between the RNZNVR Division in Christchurch and VXE6. On-the Day of the RNZN Colour Parade through Christchurch, members of VXE6 put their best dress uniforms on. They also arrive at the after match function providing us wit a very large and tasty dish of chili concarne. They used to drink in our messes and we in theirs quite regularly. Now the service by the New York ANG flying C17's.