Twenty-three years ago--after the Soviets left and before the Taliban came to power--Kabul was a garden where seven-year-old Qais Akbar Omar flew kites from the roof of his grandfather's house. Then came the hollow sounds of rocket fire as the Mujahedin, self-proclaimed holy warriors, took over Afghanistan, and the country erupted in civil war. Omar's family fled, leaving everything behind to take shelter in an old fort. But after a narrow escape...