Surveillance team member Osman Sow washes his boots after working in a potentially contaminated area of Freetown, Sierra Leone. Survey teams are sent out every day to assess sick people and dispatch burial teams to collect the dead. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Civilians who had just recently arrived in Yola prepare to flee again, this time in a large open-top truck headed to the city of Jos. Ofeibea Quist-Arcton/NPR hide caption

itoggle caption Ofeibea Quist-Arcton/NPR

After Palestinian Abdel Rahman Shaludi killed two people with a car in an attack last month, Israel destroyed his family's apartment in East Jerusalem by blowing up the front outside and most internal walls. Israel says the aim is deterrence, while the Palestinians call it collective punishment. Ahmad Gharabli/AFP/Getty Images hide caption

itoggle caption Ahmad Gharabli/AFP/Getty Images

U.S. Secretary of State John Kerry (right) and Iran's Foreign Minister Javad Zarif (left) shake hands as Oman's Minister for Foreign Affairs Yussef bin Alawi (second from right) and the former EU top diplomat Catherine Ashton watch in Muscat, Oman on Nov. 9. Iran is holding talks with six world powers in Vienna this weekend in advance Monday's deadline for a deal on Iran's nuclear program. Nicholas Kamm/AFP/Getty Images hide caption

itoggle caption Nicholas Kamm/AFP/Getty Images

Sarah Obama, left, and her translator, Mama Sarah Obama Foundation Executive Director Debra Akello, spoke at the United Nations on Wednesday. Bebeto Matthews/AP hide caption

itoggle caption Bebeto Matthews/AP