More than a breach of the Anzac Treaty, the exiling of New Zealand-Australians to Christmas Island is an astonishing breach of the Anzac spirit. History is stronger than mateship: blood and geography have made a family of Australians and New Zealanders.
When we negotiated the Australia and New Zealand Closer Economic Relations Agreement (CER) in 1982, New York Times columnist Jimmy Reston advised us, "I am for togetherness". The spirit of togetherness is needed to restore the practice of decency now being tested.
The solution is straightforward and logical. Such an act could not happen if our two nations had the political relationship our economic relationship demands. The negotiators of CER intended it to grow into an Anzac customs union and single market. Two leaders as focused and smart as John Key and Malcolm Turnbull can do away with the Christmas Island experience and give half a million New Zealand-Australians and a smaller but significant number of Australian-New Zealanders their full rights by following this path.
It requires hard work - but fortunately not for Prime Ministers. They hand the task to their ministers and officials, many of whom have pondered in amazement the delay in transtasman integration. In particular, the failure to move in 2005 when wide agreement had been secured from both business communities to further economic union.
Perhaps delay is not surprising given our joint remoteness and its ability to deflect external political pressure. Australian nationalism emerged to unify the Australian colonies into a new nation barely a century ago. The logic of New Zealand involvement was clear - demonstrated by our participation in the preliminary conferences and the inclusion of a New Zealand option in the Australian constitution. Richard Seddon's 1200 reasons for staying out are less valid now we have left the days of sea travel.