Factbox: Sanctions on Iran’s oil sector

(Reuters) - Iran and six world powers reached a nuclear deal on Tuesday, capping more than a decade of negotiations with an agreement that could transform the Middle East, and which Israel called an "historic surrender". Under the deal, sanctions imposed by the United States, European Union and United Nations would be lifted in return for Iran agreeing long-term curbs on a nuclear program that the West has suspected was aimed at creating a nuclear bomb. International sanctions imposed to force I