Iran's President Hassan Rouhani said Wednesday Tehran's decision to boost uranium enrichment to 60 percent was a response to Israel's "nuclear terrorism," three days after an attack on its Natanz nuclear facility. "Enabling IR-6 (centrifuges) at Natanz today, or bringing enrichment to 60 percent: this is the response to your malice," Rouhani said in televised remarks. "What you did was nuclear terrorism. What we do is legal." amh/mj/fz