When Iran and the United States inked a deal on the war this week, one unlikely figure on the Iranian side emerged from the shadows of the negotiations and into the open.

When Iran and the United States inked a deal on the war this week, one unlikely figure on the Iranian side emerged from the shadows of the negotiations and into the open.

For decades the Islamic republic has been using its "main enemy" America to distract from its repressive regime, analysts say. But the recent truce with Donald Trump could change…