"Saleh, the narrator of Out of Mesopotamia, is a middle-aged Iranian journalist who moonlights as a writer for one of Iran's most popular TV shows but cannot keep himself away from the front lines in neighboring Iraq and Syria. There, the fight against the Islamic State is a proxy war, an existential battle, a declaration of faith, and, for some, a passing weekend affair. After weeks spent dodging RPGs, witnessing acts of savagery and stupidity, Saleh...