Nigeria, March 15 -- His father dead. He is injured. He is on the run. He lacks legitimacy. Which leaves a question echoing across the Middle East tonight. Who is running Iran? Power in the Islamic Republic was designed to look immovable. For decades the system projected the image of iron discipline. One supreme leader at the summit, a network of clerics, intelligence services and revolutionary guards beneath him, all bound together by the authority of a single center. The structure was never democratic. But it was clear. Authority flowed downward from one unquestioned figure. That clarity is now beginning to fracture. The name suddenly hovering over the system is Mojtaba Khamenei. For years he lived in the shadows of power, the son of t...