H.E. Luis Alfonso de Alba of Mexico is the UNSG’ Special Envoy for the 2019 Climate Summit. Before his appointment, Mr. de Alba was Undersecretary for Latin America and the Caribbean in Mexico’s Ministry of Foreign Affairs since September 2017. Appointed Ambassador in 2001, he brings distinguished experience as Permanent Representative of Mexico to the Organization of American States, to the International Organizations in Vienna, to the United Nations in New York and to the United Nations Office and other International Organizations in Geneva, among other postings. As his country’s Special Representative for Climate Change, Mr. de Alba led the negotiations for the 2010 United Nations Climate Change Conference (COP16) in Cancún, Mexico. He has also held several elected positions at the United Nations.