Military leaders who went along with the push to topple Iran's regime are facing blame for not telling the president up front that bombing alone could never do the job — a bad sign for anyone hoping air power can force regime change.

• Rep. Thomas Massie keeps pressing the point that the top military brass should have pushed back and said no to the president during planning.
• Iran's key defenses are buried deep inside granite mountains, built to survive nuclear blasts, much like America's own underground command bunkers.
• Dropping every bomb in the U.S. arsenal would not be enough; toppling the regime would take a ground army of a million troops and massive casualties.
• The honest warning should have come early, in the situation room, along with a plan to keep civilian deaths low.

Outlook: Expect more pressure in Congress for accountability over who signed off on the Iran strikes and what they were told could actually be achieved.