"Now what makes you think that the USA would be putting "boots on the ground" to destroy Iran's nuclear facilities? Unlike Iraq, the goal with Iran is not regime change,.... well, at least by US forces."

What makes you think we can destroy Iran's nuclear facilities and capabilities by air? And the Iranian fear that their citizens will turn on their own government? That was the exact same propoganda used by Rummy and the Neocons to convince us that invading Iraq would be a walk in the park, with Iraqi citizens showering our troops with flowers....c'mon, fool me once...