Iraq's National Security Adviser Mowaffak al-Rubaie calls military action on Iran a big mistake, saying it should not even be considered.

"Attacking Iran? I say a big fat no. It's a fatal mistake," al-Rubaie said. "It should never be an option at all."

Rubaie said any attack on Iran would set the whole Middle East ablaze and Iraq would suffer the most.

"It is not a strategy. It's a mistake of Chernobyl magnituded," he maintained, adding, "What we need from the United States is to engage seriously with Iran."

Rubaie who was attending an event in Washington hosted by the Center for Strategic and International Studies think tank said, "The whole area will be in flames, and Iraq will be the battlefield for all this, and we will pay heavily."