Rwandan President Paul Kagame takes part in a conference on the role of women at the nation's Parliament in the capital, Kigali, in 2010. Women in Rwanda account for 64 percent of the lower house of Parliament — a higher percentage than in any other country. Jason Straziuso/AP hide caption

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Protesters march in front of the Nigerian Embassy in Washington, D.C., on Tuesday in support of the girls kidnapped by members of the Islamist group Boko Haram. Gary Cameron/Reuters/Landov hide caption

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Iranian students climb over the wall of the U.S. Embassy in Tehran during the Iranian Revolution, Nov. 4, 1979. The students went on to seize the embassy staff, and hold 52 of them as hostages for 444 days. AFP/Getty Images hide caption

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Masses of refugees wait in line to receive food aid distributed in the Yarmouk camp on Jan. 31 in Damascus, Syria. United Nation Relief and Works Agency/Getty Images hide caption

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An anti-Yanukovych protester walks past a barricade in Independence Square, the epicenter of the country's current unrest, in Kiev, Ukraine, on Wednesday. Emilio Morenatti/AP hide caption

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A demonstrator confronts riot policemen during an anti-government protest in Caracas, Venezuela's capital, on Feb. 22. Raul Arboleda/AFP/Getty Images hide caption

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Ukrainians line up to get their money from a bank machine in the western city of Lviv last week. Clashes in Independence Square in Kiev and the resulting political turmoil caused a financial panic. AFP/AFP/Getty Images hide caption

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Anti-government protesters throw stones during clashes with riot police in Kiev's Independence Square, the epicenter of the Ukraine's current unrest, on Wednesday. The deadly clashes have drawn sharp reactions from Washington and generated talk of possible European Union sanctions. Efrem Lukatsky/AP hide caption

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TV producer Colleen Bell, shown here in a 2013 photo, was a big donor for President Obama before she was nominated to become ambassador to Hungary. Obama has chosen more political appointees than his predecessors. Handout/Getty Images hide caption

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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. Jerome Delay/AP hide caption

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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 hide caption

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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 hide caption

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