TEHRAN -- Sean Stone, the son of U.S. filmmaker Oliver Stone, has converted to Islam in Iran. He went to the office of Shia cleric Ayatollah Mohammad Nasseri Dowlatabadi in the city of Isfahan on Tuesday and recited shahada, the Persian service of the Fars News Agency reported. The shahada is the Islamic profession of the faith, “There is no god but Allah, and Muhammad is His messenger.” To convert to Islam, one simply has to recite this while believing it in one’s heart.