DUBAI (Reuters) -Israel will receive a "devastating and decisive response" if it attacks Iran, Tehran's Revolutionary Guards said on Thursday, days after CNN reported U.S. intelligence suggesting Israel was making preparations to strike Iranian nuclear facilities.

Iran’s top diplomat warned Thursday that his country would take “special measures" to defend its nuclear facilities if Israel continues to threaten them, raising the stakes further ahead of a new round of talks with the United States.

Iranian Foreign Minister Abbas Araghchi described the 5th round of talks with the United States as "professional" till now. Araghchi said that there was a positive shift in tone between Tehran and Western powers during talks in Rome on May 23.