MADRID, SPAIN - DECEMBER 10: Former US Secretary of State John Kerry attends to a conference at the COP25 Climate Conference on December 10, 2019 in Madrid, Spain. The COP25 conference brings together world leaders, climate activists, NGOs, indigenous people and others for two weeks in an effort to focus global policy makers on concrete steps for heading off a further rise in global temperatures. (Photo by Pablo Blazquez Dominguez/Getty Images)