(Reuters) - Russia's ambassador said on Monday he hoped that efforts to revive Iran's 2015 nuclear accord would resume after the Nowruz Persian New Year holidays, TASS news agency reported.

       Efforts to clinch a new deal have been left in limbo after a last-minute demand by Russia, which now at odds with the West over its invasion of Ukraine, forced world powers to pause talks for despite having a largely completed text.

       "Immediately after that, I really hope the negotiation process will resume," Russia's ambassador to Iran, Levan Dzhagaryan, was quoted as saying.

       (Reporting by Reuters; Editing by Conor Humphries)