A lieutenant issues orders as U.S. Marines come under Taliban sniper fire in the northeast of Marjah on Feb. 14. Patrick Baz/AFP/Getty Images hide caption

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Should the U.S. frame sanctions in protest of human rights violations or of Iran's nuclear program? AFP/Getty Images hide caption

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A member of the Icelandic search and rescue team searches under the collapsed roof of a school in Leogane, a city close to the epicenter of last week's earthquake. Jackie Northam/NPR hide caption

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A Haitian rescue worker helps the L.A. County Search and Rescue team in in downtown Port-au-Prince. David Gilkey/NPR hide caption

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U.S. soldiers arrive at the Port-au-Prince international airport on Friday. The U.S. Army took over operations at the airport, which has suffered from major bottlenecks as flights with rescue teams and relief supplies have descended in the wake of Tuesday's earthquake. Thomas Coex/AFP/Getty Images hide caption

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Afghan President Hamid Karzai passes an honor guard in Kabul before his swearing-in ceremony last month as the country's president for another five-year term. Shah Marai/AFP/Getty Images hide caption

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Election workers in Afghanistan audit suspect ballots at the Independent Elections Commission warehouse in Kabul on Oct. 7. A runoff election between incumbent President Hamid Karzai and his nearest challenger is likely, says Afghanistan's ambassador to the U.S. Shah Marai/AFP/Getty Images hide caption

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U.S. soldiers walk through the mountains on patrol in Afghanistan's northeastern Nuristan province in February. The U.S. military is beginning to pull troops out of remote areas such as Nuristan and move them to more populated areas. Spencer Platt/Getty Images hide caption

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U.S. Marines with Golf Company, 2nd Battalion, 3rd Regiment run to take position behind a building after being fired on by Taliban while on patrol in the village of Dahaneh, in Helmand province, Afghanistan, on Aug. 28. Julie Jacobson/AP hide caption

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