“Even if there were such a thing as a ‘right’ or ‘wrong’ side in this 14-century-old blood feud, the fact remains that, under President Obama’s leadership, the United States and its allies are fighting on both sides. In Syria, the U.S. has inadvertently wound up on the Shia side, bombing Sunnis. And, although that was not the intent, the U.S. is giving every strategic advantage to Shia President Bashar al-Assad. In Iraq, the United States is also on the Shia side. But in this case it is deliberate. On the all-important Arabian Peninsula (including Yemen), the United States is on the Sunni side. The U.S. has forever been a major supplier of arms to the Sunni-dominated armed forces on the peninsula.”
http://www.moneyandmarkets.com/sunni-shia-conflict-impact-oil-stocks-70598