(ANSA) - ROME, JUN 15 - Environment and Energy Security Minister Gilberto Pichetto Fratin said Monday that he expects there to be a popular referendum by the end of the decade on the government's plan to bring nuclear energy back to Italy. "A new referendum on nuclear power? I take it for granted that there will be one in 2028 or 2029," Pichetto Fratin said on the sidelines of a conference in Turin. "It is a right guaranteed by our Constitution (for citizens to be able) to participate in deci...