By Jeff Gardner -Last August, Joseph received the news he had feared for weeks: The armies of the so-called Islamic State in Iraq and Syria, or ISIS, had invaded the region of Sinjar in western Iraq, the place where he and tens of thousands of Yezidis had lived for centuries. When Joseph got word that ISIS fighters were headed towards his home village of Tillqasab, he panicked — although he had left years ago, his elderly father still lived in the village. Arriving at the outskirts of town, Joseph realized that he was too late — Tillqasab had already fallen...