An Afghan refugee girl, center, uses her head scarf to cover her sleeping sister, while walking in an alley of a poor neighborhood on the outskirts of Islamabad, Pakistan, Tuesday, April 9, 2013. ... more 
An Afghan refugee girl, center, uses her head scarf to cover her sleeping sister, while walking in an alley of a poor neighborhood on the outskirts of Islamabad, Pakistan, Tuesday, April 9, 2013. Pakistan hosts over 1.6 million registered Afghans, the largest and most protracted refugee population in the world, according to the U.N. refugee agency. (AP Photo/Muhammed Muheisen) less 
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Associated Press | Photo By Muhammed Muheisen
Wed, Apr 10, 2013 5:12 AM EDT