SEUN SANNI and ISMAIL ABBA ANNAS Shuaibu says he awoke to the sound of gunshots fired by men who burst into his boarding school in northwest Nigeria in a nighttime raid. He and hundreds of other boys were rounded up and forcibly marched out of the school and into a nearby forest. After several hours trekking through woodland, the gunmen ordered them to stop walking and warned them not to try to flee, Shuaibu said. "They said even if you tried to escape, or we allowed you to run, you will go nowhere. Rather, you will die in the forest,"…