Afghan presidential candidates Abdullah Abdullah, left, and Ashraf Ghani Ahmadzai shake hands after signing a power-sharing pact in Kabul Sunday. The first vote in the election was held in April; a runoff followed in June. Wakil Kohsar/AFP/Getty Images hide caption

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Abdullah Abullah (left) and Ashraf Ghani, shown here on August 8, have been contesting the results of Afghanistan's runoff presidential election for months. They are expected to sign a power-sharing deal on Sunday. Wakil Kohsar/AFP/Getty Images hide caption

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Nicaragua's Contra rebels in 1990. The U.S. backed the Contras in the 1980s, which led to the ouster of the leftist Sandinista leadership. But the U.S. aid violated American law and contributed to the biggest scandal of President Reagan's administration. Michael Stravato/AP hide caption

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An Afghan firefighter emerges from the smoke from a fire in a Kabul clothing market in 2012. The fire department is remarkably professional in a city where few institutions function. Mohammad Ismail/Reuters /Landov hide caption

itoggle caption Mohammad Ismail/Reuters /Landov

Many Afghans who have worked as interpreters with the U.S. and other Western governments are trying to get visas to leave. "Mohammad," an interpreter, joined two former British soldiers last year in that country to call on Britain to grant Afghan interpreters asylum. Kirsty Wigglesworth/AP hide caption

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An Afghan policeman searches a man at a checkpoint where a NATO soldier was stabbed to death in Kabul on Aug. 20. As U.S. and NATO troops are drawing down in Afghanistan, the Taliban have been stepping up attacks this summer. Shah Marai/AFP/Getty Images hide caption

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Secretary of State John Kerry and Afghanistan's presidential candidates, Ashraf Ghani (center) and Abdullah Abdullah (right), announce a deal in Kabul on July 12 to audit all Afghan election votes. Kerry returned last week and both candidates reaffirmed their commitment to the audit. Jim Bourg/AP hide caption

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At the Romez Store in Kabul, brides-to-be can place custom orders for dresses costing upwards of $900, which is three times the average monthly wage in Afghanistan. Sean Carberry/NPR hide caption

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U.S. Maj. Gen. Harold Greene was visiting an Afghan military training academy Tuesday when he was shot dead by an Afghan soldier, who was subsequently killed. Afghan troops who knew the attacker say he disliked the Taliban and they aren't sure what his motive was. U.S. Army/Getty Images hide caption

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U.S. Secretary of State John Kerry talks with Afghan presidential candidate Abdullah Abdullah at the start of a meeting at the U.S. Embassy in Kabul on Friday. Kerry sought Friday to broker a deal between Afghanistan's rival presidential candidates. Jim Bourg/AP hide caption

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