The Prime Minister's justifying his noted absence from a global meeting on Ukraine, due to the time difference.
Coalition of the Willing members gathered for virtual talks overnight, to embolden President Volodymyr Zelenskyy ahead of a meeting at the White House, for a number of them.
Many leaders attended, including Australia, France and the UK.
Newstalk ZB senior political correspondent Barry Soper says Luxon was invited to attend the discussion - and officials joined the call in his place.
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