Saudi Crown Prince Sultan's has been rushed abruptly for urgent medical care last week. It was an alarming signal for a possible power struggle in the world's biggest oil exporter, and a sign of a serious problem that may disturb the succession line in the absolute monarchy and create the possibility for internal instability, analysts and diplomats say.

Prince Sultan Bin Abdul Aziz is no ordinary royalty. He is has been the minister of Defense and Aviation and the Inspector General and Deputy Prime Minister for more than a quarter of a century. He is one of the wealthiest and powerful princes in Saudi Arabia. He is the Crown Prince and second in succession. ... Read full article