An Afghan girl sits with her mother at The United Nations High Commissioner for Refugees (UNHCR) registration center on the outskirts of Peshawar on June 19, 2012, as they prepare to return to their home country after fleeing civil war and Taliban rule. 
About 20 percent of the population in Afghanistan are refugees. Of those abroad, there are 1.7 million Afghans in Pakistan and a million in Iran.(A. Majeed/AFP/Getty Images)
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An Afghan girl sits with her mother at The United Nations High Commissioner for Refugees (UNHCR) registration center on the outskirts of Peshawar on June 19, 2012, as they prepare to return to their home country after fleeing civil war and Taliban rule.

About 20 percent of the population in Afghanistan are refugees. Of those abroad, there are 1.7 million Afghans in Pakistan and a million in Iran.(A. Majeed/AFP/Getty Images)