Updated

The European Union foreign policy chief says she expects the economic sanctions against Iran to be lifted soon.

Iran and world powers led by the U.S. agreed to a landmark nuclear deal to limit Tehran's enrichment of uranium in exchange for lifting economic sanctions. Iran has always denied seeking nuclear arms.

Speaking to reporters in Prague Monday, Federica Mogherini says there was no date set yet but that "the implementation of the agreement is proceeding well."

Mogherini says it is necessary that all steps agreed have to be "properly done," including the work of the International Atomic Energy Agency. But after consulting recently the foreign ministers of Iran and the United States she believes "things are going well" and the sanctions might be lifted "rather soon."