If I were mossad, I’d start with his family and work my way up.
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Personally, I think they should start with his fingers, one joint at a time, one finger at a time, one hand at a time. Then they can restart the same process with his feet. Preferably using a dull blade.
Not nice, but for the ones who order, and perform the burning of, and decapitation of infants, it is fitting and just, IMO.
Start with 3rd cousins and inlaws.......