Dan Shapiro quoted in Vox article, “Mysterious Explosions Keep Happening in Iran. Israel Is Likely Behind It.”
"Such assessments are important, former US Ambassador to Israel Daniel Shapiro told me. Israeli officials believe that if those advanced centrifuges were ever installed and operated at full capacity, it 'might allow Iran to break out not with just one bomb, but with an arsenal' of nuclear weapons, he said. Delaying that possibility, then, is certainly a clear and vital Israeli goal... "As Shapiro, the former American ambassador to Israel, explained it to me, the concept 'reflects the Israeli philosophical approach [...]