National Security Adviser Tzachi Hanegbi did not specify how Jerusalem would respond. 

srael will have no choice but to act if Iran enriches uranium above 60% purity, National Security Adviser Tzachi Hanegbi warned on Monday in an address at a counterterrorism conference at Reichman University in Herzliya…“If Iran moves to enrich uranium above 60% and we identify it—and there is no possibility that we won’t, that the world would not recognize it—the result is that Israel would act out of necessity,” said Hanegbi. “There would be no choice.”