I hope you’re wrong, but they seem to skate on everything.
If not, and if they’re tried for treason and hundreds of other offenses, they (all three of them) should be offered a choice: Death by hanging, or spending the rest of their miserable lives relegated to the hull of a garbage skow sailing the seas.
I vote for exiling them all to an uninhabited island somewhere in the Pacific, and then declaring war on that island.