The trauma center operated in Kunduz by Doctors Without Borders was in flames after U.S. airstrikes on Saturday that left 22 dead, including medical staff and patients. AP hide caption

itoggle caption AP

Syrians arriving on the Greek island of Lesbos are part of the largest flow of refugees since World War II. The challenge for the U.N. is to find the funds and political will to address refugee needs while tackling the newly ratified Sustainable Development Goals. Angelos Tzortzinis/AFP/Getty Images hide caption

itoggle caption Angelos Tzortzinis/AFP/Getty Images