Negotiations between Iran and the world powers on how to revive the 2015 nuclear accord will resume this weekend, U.S. Deputy Secretary of State Wendy Sherman said on Wednesday, adding that Iran's June 18 presidential election was a complicating factor.

Iran nuclear talks to resume over the weekend, says US

Iran on Saturday named a man it wants arrested in connection with a recent explosion and power outage at its main Natanz nuclear plant, as talks got underway in Vienna to try to save Tehran's 2015 nuclear deal with world powers.

Iran identifies suspect behind blast at Natanz nuclear site

Iran's President Hassan Rouhani has said that Tehran's decision to boost uranium enrichment to 60% was a response to Israel's "nuclear terrorism," three days after an attack on its Natanz nuclear facility.

Iran says 60% Uranium enrichment answer to 'nuclear terrorism'