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HOLLYWOOD -- The latest National Intelligence Estimate concluding that Iran discontinued its nuclear weapons program four years ago has claimed one casualty: CNN has postponed speculative documentary "We Were Warned -- Iran Goes Nuclear."

The two-hour spec, which was slated for Dec. 12 under the "CNN Presents" banner, was "set partially in the future," featuring a what-if scenario as former government officials -- playing fictional cabinet members -- debate how to deal with the Iranian threat.

That special was "based on a different set of rules and a different set of conditions," said CNN veep-senior exec producer Mark Nelson, noting that the surprising NIE report "changed everything."

In its place, CNN will this weekend air two Campbell Brown-hosted specials on the Iran situation and its history. Portions of "We Were Warned" correspondent Frank Sesno's original reporting will be incorporated into those hours, which air Saturday and Sunday.

Among those participating in the war-game panel featured as part of "Iran Goes Nuclear" were former CIA director Jim Woolsey, former EPA administrator Christie Todd Whitman and former presidential adviser David Gergen.