NEW YORK, NY - APRIL 22: French President Francois Hollande delivers a speech at the United Nations after the Opening Ceremony of the High-Level Event for the Signature of the Paris Agreement April 22, 2016 in New York. Hollande signed the Paris climate agreement, the first leader from a record 171 countries to endorse the accord on combatting global warming.  (Photo by Selcuk Acar/Anadolu Agency/Getty Images)