A man walks past a fresh grave in the Kamar Kulagh slum outside of Herat. David P. Gilkey/NPR hide caption

itoggle caption David P. Gilkey/NPR

Presidential candidate Ashraf Ghani waves to supporters during a campaign rally in Kabul on Tuesday. He is one of the three leading candidates in Saturday's presidential election. Massoud Hossaini/AP hide caption

itoggle caption Massoud Hossaini/AP