This was done at least once before. I believe Patraeus made a similar call to the pastor in GA who wanted to burn the Koran. It is outrageous because it makes the absurd connection between national security and the welfare of our troops to an individual exercising his right of free speech. Self-censorship is the worst censorship of all.
Maybe we should announce individual Koran burnings and it for telephone calls from the Chairman of the Joint Chief of Staff.
Imagine how such an action being taken during WWII if someone did something that might offend the Japanese or the Germans.