Nicolás Misculin and Sarah Marsh

Alberto Nisman Mystery Deepens as Probe Delves Into Killing

(Reuters) — Alberto Nisman was working hard to prepare for a congressional hearing on his claim that Argentina’s president tried to whitewash Iran’s alleged involvement in a bombing that killed 85 people, a make-or-break day in his career as prosecutor. In the spotlight since leveling his hefty accusations last week, Nisman needed to make a…