Leonardo DiCaprio screens 'Before The Flood' at UNHQ in New York (16 images)

Leonardo DiCaprio, Secretary of State John Kerry and Shailene Woodley attend a special screening of "Before the Flood" at United Nations Headquarters in New York City on October 20, 2016.

United States Secretary of State John Kerry and Leonardo DiCaprio arrive on the red carpet at the 'Before The Flood' New York screening at United Nations Headquarters on October 20, 2016 in New York City. Photo by John Angelillo/UPI

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Shailene Woodley arrives on the red carpet at the 'Before The Flood' New York screening at United Nations Headquarters on October 20, 2016 in New York City. Photo by John Angelillo/UPI

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Fisher Stevens and Leonardo DiCaprio arrive on the red carpet at the 'Before The Flood' New York screening at United Nations Headquarters on October 20, 2016 in New York City. Photo by John Angelillo/UPI

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Shauna Robertson and Edward Norton arrives on the red carpet at the 'Before The Flood' New York screening at United Nations Headquarters on October 20, 2016 in New York City. Photo by John Angelillo/UPI

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