Prime Minister Bill English has revealed that Government officials looked into whether a missile from North Korea could hit New Zealand.
Mr English is in Tokyo for talks with the Japanese government and spoke at a media conference late last night.
"There's been some discussion about that - it looks extremely difficult given they haven't yet generated an inter-continental missile," he said.
"But they are on the way there which is the real threat. There's no indication they have the capability to get to New Zealand."
The Ministry of Foreign Affairs and Defence assessed a possible strike after North Korea threatened Australia.
Mr English says it was found to be very unlikely a missile could reach New Zealand - but the fact it had to be assessed shows how unstable Kim Jong Un is making the world.