If it's just about the feud between different factions of Muslims, why did the IS state that it's a Muslim duty to kill westerners? Why did the IS wipe out an entire community of Yazidis, women and children included? And since it's the Sunni IS who are doing this, why on earth is Showtime accusing Iran of being an existential threat to his country? I've not heard of Iran attempting to wipe out ethnic groups. Suppress them yes, wipe out no. In short, his accusation stinks of hypocrisy.
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