Jacinda Ardern is speaking to the United Nations General Assembly for the second time.
Ardern will speak after Spain's representative and will be followed by Prime Minister Shinzo Abe of Japan.
It will be her second time speaking at the UN this week after she gave a presentation to the Climate Action Summit on Monday (local time).
"The situation is stark. It will not be easy. But our generation - we - have it within our grasp, not just to prevent the worst, but to build the best possible world for the generations to come."
Watch the video above for a livestream of Ardern's General Assembly speech.
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