Internationally recognized leader on global climate change. Formerly, Executive Secretary of the United Nations Framework Convention on Climate Change (UNFCCC). Assuming responsibility for the international climate change negotiations after the failed Copenhagen conference of 2009, was determined to lead the process to a universally agreed regulatory framework. Throughout tenure, brought together national and sub-national governments, corporations and activists, financial institutions and communities of faith, think tanks and technology providers, NGOs and parliamentarians to jointly deliver the unprecedented climate change agreement. For this achievement, has been credited with forging a new brand of collaborative diplomacy.