Pope Francis waves in Saint Peter's square at the Vatican. The pope heads to Turkey on Friday, a country with few Catholics, but he plans to reach out to Muslims and to the Orthodox Church. Tony Gentile/Reuters/Landov hide caption

itoggle caption Tony Gentile/Reuters/Landov

The lowest gas prices in years are seen Wednesday on a fuel sign in Lawrence, Kan. A day later, OPEC decided to maintain current production levels, virtually ensuring continued low prices at the pump. Orlin Wagner/AP hide caption

itoggle caption Orlin Wagner/AP

An Iraqi child, whose family fled from Islamic State violence in the northern city of Mosul, stands outside a tent that serves as a school in the southern city of Najaf on Sunday. Some 2 million Iraqis have been driven from their homes by fighting this year. Alaa Al-Marjani /Reuters/Landov hide caption

itoggle caption Alaa Al-Marjani /Reuters/Landov

Israeli Prime Minister Benjamin Netanyahu listens during a Cabinet meeting in Jerusalem on Sunday. His Cabinet approved a draft law that defines the country as "the nation-state of the Jewish people." Jim Hollander/AP hide caption

itoggle caption Jim Hollander/AP

Journalist James Foley was killed by the so-called Islamic State in August of this year. His mother, Diane Foley, says the U.S. government never reached out to tell her that her son was dead. Marko Drobnjakovic/AP hide caption

itoggle caption Marko Drobnjakovic/AP

Tunisian citizens take a selfie with their inked fingers after casting their votes at a polling station during the Tunisian Presidential Election on Sunday. Anadolu Agency/Getty Images hide caption

itoggle caption Anadolu Agency/Getty Images