I know the Iranians are Persian, and if you read any of their websites you can see how much they despise the Arabs. None the less, would they, like so many Iraqi Arabs hate having foreigners on their land, even those Iranians who want to be liberated from their oppresive leadership? If Viet Nam was a quagmire, the Middle East is a giant swamp filled with quicksand. And we should not be manipulated into anything more by false information.
That's one reason people have to liberate themselves. Probably the best policy for Islam is containment and isolation but you're right, the minute we liberate them, they would turn on us --- nation building doesn't work. Islam is successful only because it encourages Muslims to move into other countries, if they ever have to stay home and live with Islam, they would lose their desire for it.