Iran accuses Israel of causing nuclear site blackout By (0) Iranian Foreign Minister Mohammad Javad Zarif on Monday blamed Israel for the blackout that occurred at a nuclear facility a day earlier in central Iran. Photo by Maryam Rahmanian/UPI | License Photo April 12 (UPI) -- Iran's Foreign Minister Javad Zarif on Monday accused Israel of being responsible for causing the blackout a day earlier at the Natanz nuclear facility in central Iran, vowing Tehran will take retaliatory measures, according to state-run media. Zarif made the comments before lawmakers during a national security and foreign policy commission, the Islamic Republic News Agency reported.