Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Will Saudi Oil Attacks Worsen Sunni-Shi'ite Tensions? Edward Yeranian CAIRO - Saturday's attacks on Saudi oil installations in the country's predominantly Shi'ite Eastern Province could heat up long-standing tensions with the Saudi Kingdom's Sunni majority. The complex political stew includes allegations that Yemen's Shi'ite rebels, who claimed they launched the attack, had help from inside Saudi Arabia. However, Saudi-coalition spokesman Col. Turki al-Maliki denies the Shi'ite Houthis were behind the attacks. He says that an investigation of the attacks is under way, but initial indications are that the Houthis did not carry out the strikes, but are merely pawns of the "terrorist" Iranian Revolutionary Guard. "Iranians have been trying to drum up trouble in the mainly Shi'ite parts of Saudi Arabia for some time," Dr. Paul Sullivan of the U.S. National Defense University told VOA. "Iranian mullahs will always try to weaken Saudi Arabia in whatever way they can," he said, adding that "there will be a crackdown, and a big one," if Iran gains support in Shi'ite parts of Saudi Arabia. .