(Reuters) - The Head of Iran's Atomic Energy Organization, Mohammad Eslami, said on Friday that talks in Vienna next week will be about the United States returning to the 2015 nuclear deal.

       Tehran and Washington are due to resume indirect negotiations, which have been on hold since June, in Vienna on Monday. Then-president Donald Trump pulled the United States out of the deal in 2018, and reimposed harsh sanctions on Iran.

       (Reporting by Parisa Hafezi; Writing by Lilian Wagdy; Editing by Kevin Liffey)