What kind of media does the US have? Is this the standard of dialog that now considered "acceptable discourse"? Will Fox fire him for that? Of course not... he's more likely to get an award in the good old US of A, 2012, than a carpeting. The DC neocon organized crime cartel are probably laughing like drains about it as well.
What kind of sick individual, and what kind of mindset calls openly for a new, 21st Century Holocaust, involving the massacre of 10s of millions of people? The short answer: Psychopaths like Stalin, or imbeciles like Carlson. Aha... but Iranians (Persians) are Muslim... and to wipe them all out - thats OK, isn't it, Mr. American Conservative! Iranians have the wrong skin color, they worship the wrong god, they speak the wrong language, they're all terrorists, and goddammit... our oil is under their fucking mountains.
Fox News is watched by millions of American conservatives, and is a hugely influential opinion-maker, alongside the rest of the corporate media, which follows a generally rightwing set of opinions, but not as far out in Looneyland and Hate Ville as Fox. How many doe-eyed right-wingers, who view the world in black' n' white, non-relativistic terms.... are now going to be baying for war against Iran, that is if they are not already doing so?
What has Iran done, as regards the United States, that would warrant even waging war against them, let alone "annihilating" the entire nation, along with its "evil people"?
Goebbels would have wet dreams listening to Carlson (and O'Reilly, Hannity, Limbaugh etc)