United States Secretary of State John Kerry and New Zealand ambassador to the US, Mike Moore, will speak in Washington next week about protecting the Antarctic's Ross Sea.
Both men will be at a function which will include a screening of the New Zealand film The Last Ocean.
Australian Foreign Minister Bob Carr may also be there.
Foreign Minister Murray McCully had a long telephone conversation with Mr Kerry this week, his first since the former presidential candidate replaced Hillary Clinton as Secretary of State.
One of the main subjects discussed was the joint bid by the US and New Zealand to get support at a meeting in Germany in July of the 25 Antarctic Treaty partners for a vast protected area in the Ross Sea.