Iran blames regional arch-foe Israel for a sabotage incident at its key Natanz nuclear site and will exact revenge, state TV quoted its foreign minister as saying, in what appeared to be latest episode in a long-running covert war. FILE PHOTO: A view of the Natanz uranium enrichment facility 250 km (155 miles) south of the Iranian capital Tehran, March 30, 2005. REUTERS/Raheb Homavandi/ Iran’s semi-official Nournews website said the person who caused an electricity outage in one of the production halls at the underground uranium enrichment plant had been identified. “Necessary measures are being taken to arrest this person,” the website reported, without giving details about the person. The incident occurred amid diplomatic efforts by Iran and the United States to revive Tehran’s 2015 nuclear deal with major powers, an accord Israel fiercely opposed, after former U.S. President Donald Trump abandoned it three years ago. […]