Iran's President Hassan Rouhani prepares to speak with NPR's Steve Inskeep on Saturday in New York City. Rouhani spoke about the recent nuclear deal between the United States and Iran. Bryan Thomas for NPR hide caption

itoggle caption Bryan Thomas for NPR

An Iraqi woman attends a festival commemorating the International Day of Peace in Baghdad on Monday. Thaier al-Sudani/Reuters /Landov hide caption

itoggle caption Thaier al-Sudani/Reuters /Landov

Secretary of State John Kerry gestures Sunday during a news conference at Villa Borsig, Berlin, with German Foreign Minister Frank-Walter Steinmeier about the ongoing crisis in Syria. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

Syrian refugee woman cries by one of her children as she and family members arrive in an overcrowded dinghy on the Greek island of Lesbos after crossing a part of the Aegean Sea from the Turkish coast, on Saturday. Yannis Behrakis/Reuters/Landov hide caption

itoggle caption Yannis Behrakis/Reuters/Landov

A newborn in Sierra Leone is treated after delivery by Caesarean section. The country's child mortality rate has dropped from 264 per 1,000 in 1990 to an estimated 120 this year. Lam Yik Fei/Getty Images hide caption

itoggle caption Lam Yik Fei/Getty Images