See Candidate Page Pete Buttigieg, Climate, Iowa, National Security Buttigieg in Iowa 12/6/19 WATCH: @PeteButtigieg says the United States must lead the world in combating climate change, calling it the “global security threat of our time.” pic.twitter.com/wGw9Nbzd2B— Andres Del Aguila (@Andres_DAguila) December 6, 2019