Let him exist in a bare cell for as long as he lives, with no contact with anyone. Two small meals a day. No books, no radio, no tv, nothing.
Confiscate his land, demolish his house, expel his entire family to Syria. Make it as though he and his family never walked the earth.
In a few years, he'll be a basket case and go on a hunger strike- and we'll let him starve himself to death, then throw his corpse far out into the ocean to be eaten by sharks.
No free education, no newspapers, no family visits. This man is slime and deserves to be treated as such.