U.S. Secretary of State John Kerry attends a special event on the Millennium Development Goals (MDGs) during the 68th United Nations General Assembly at the UN headquarters in New York, Sept. 25, 2013. World leaders agreed here Wednesday to scale up efforts to address extreme poverty, hunger and diseases, and called for a 2015 summit to set the next stage of goals beyond the 2015 deadline for completing the MDGs. (Xinhua/Zhang Jun)