Sullivan is way off base with much of this article. He clearly got this part wrong - if you go back and read the actual quote, Coulter was talking about people who dance and cheer in the streets to celebrate mass murder committed in the name of Islam, not "all Muslim nations". If he can't even get that part right, what chance does he have of getting anything else right? Not a chance...
You can read the article yourself at NRO article: This is War