In January 2013, he became the President's Special Envoy on the Millennium Development Goals, the Post-2015 Development Agenda, and Financing for Development. His primary responsibilities were to act as the focal point on discussions related to the post-2015 agenda (later, the Sustainable Development Goals), to support the framing of the agenda, support acceleration of the MDGs, and improve coordination with the Multilateral Development Banks. A key initiative was the adoption of an MDG acceleration framework by the UN Chief Executives Board (CEB), which was rooted in enhanced collaboration between all agencies to address key bottlenecks in selected countries. His work also entailed strengthening the relationship between the World Bank and the United Nations.