pAs world powers hail a "historic" nuclear deal with Iran, oil producers are bracing for the impact. If sanctions are lifted, Iran could become an oil giant – pumping its reserves into an already-oversupplied market. But analysts expect changes to be slow, as years of sanctions have set Iranian producers back. Plus – take a peek into one of the chocolate industry’s busiest periods, and find out what sweet treats will be flying off the shelves this Easter.