U.S. Ambassador to the Unitied Nations Samantha Power (right) listens to Lucy Mandazuto at a community hospital in Bangui, Central African Republic, on Thursday. Mandazuto was wounded in sectarian violence.
Soldiers from Burundi arrive at the airport in Bangui, capital of the Central African Republic, on Dec. 15 to join the African Union and French efforts to restore security in the troubled nation.
Sia Kambou/AFP/Getty Images
Iranian Foreign Minister Mohammad Javad Zarif shakes hands with U.S. Secretary of State John Kerry on Nov. 24 in Geneva, after the announcement of a deal halting parts of Iran's nuclear program.
Fabrice Coffrini/AFP/Getty Images