By the time Turkey invaded northern Syria, in October, the Ain Issa refugee camp—twenty miles south of the Turkish border—resembled a small city. In recent years, some fourteen thousand people had moved there, displaced by isis, Russian and American air strikes, or the repressive regime of President Bashar al-Assad. The camp had evolved from a few tents in a muddy field into a sprawling grid complete with shops, cafeterias, falafel stands, schools, clinics, mosques, a full-time administration, and offices of more than two dozen local and international N.G.O.s. As news spread of the Turkish offensive, Nashat Khairi, a camp mukhtar, or selected representative, urged the roughly thirty families in his section to remain calm. A fruit vender before the war, Khairi had fled his village, in the eastern province of Deir […]