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NEW YORK, NY - DECEMBER 18 US Secretary of State John Kerry enters at a news conference after a United Nations Security Council meeting on Syria at the United Nations in New York on December 18, 2015. 20 nations from around the world gathered to discuss the ongoing conflict. (Photo by Andrew Renneisen/Getty Images)

NEW YORK, NY - DECEMBER 18 US Secretary of State John Kerry enters at a news conference after a United Nations Security Council meeting on Syria at the United Nations in New York on December 18, 2015. 20 nations from around the world gathered to discuss the ongoing conflict. (Photo by Andrew Renneisen/Getty Images)