I don't know a lick of Farsi, but I always had a suspicion that Ahmed-i-Nejad's call to have Israel 'wiped from the map' was a little too easy, too pat and too Western. Knowing what I know of languages (I do speak Russian and read and write Latin and Ancient Greek) I simply doubted that Farsi had a comparable idom.
Turns out I was right. The idiom doesn't exist.
Moreoever, Hitchens is a scumbag and Slate really does owe Cole an apology.