(Bloomberg) -- Iran’s top atomic official said an incident at the country’s largest uranium enrichment facility was an act of “nuclear terrorism” by opponents of talks between the Islamic Republic and world powers to revive a landmark 2015 accord. Ali Akbar Salehi, the head of the Atomic Energy Organization of Iran, said the disruption at the Natanz facility that’s home to thousands of gas centrifuges, showed there was an attempt to thwart both...