John Kerry is a distinguished American diplomat and politician who has dedicated decades to public service and international relations. As the 68th United States Secretary of State from 2013 to 2017 under President Barack Obama, he brought extensive experience as both a former naval officer and seasoned politician to America's most senior diplomatic role.

Kerry has emerged as a prominent voice in global climate action, particularly following the United States' re-engagement with the Paris Climate Agreement. His expertise spans the complex intersection of international diplomacy, environmental policy, and multilateral cooperation.

Through his speaking engagements at major events like Countdown 2021, Kerry addresses the critical steps needed to translate climate commitments into meaningful action, drawing from his firsthand experience navigating the challenges of global environmental governance and international treaty implementation.