re: Even if we had the capability
All debating silliness aside, I'd like to think you nailed it here. There's lots of unrest inside Iran and support form Iranian expatriots in the US and elsewhere to depose the mullahs. Unfortunately, the US in particular has historically been inept at aiding revolutionists. Let's hope Iran heals from within - the best possible outcome.
As a last resort however, were I Commander-in-Chief I'd intervene before nuclear weapons came on line. I fear a nuclear Iran LESS than a nuclear Iran who 'accidently' has a weapon or 3 disappear.