The problem is, he will be considered a martyr, hero, a model - and perhaps envied for his acquisition of 72 virgins.
What needs to be done, even if it is after-the-fact, is to announce that he was buried wrapped in a pigskin, face down, with his ass facing Mecca. At a minimum, it might instill Second Thoughts.
Like you, I prefer the Jack Black Pershing approach, viz. after burying him your way broadcast his funeral arrangements across the Muzzy countries.