Legacy of the late terror-sponsoring king for his dementia stricken half brother.
After 'rehabilitating' the country's petty criminals into professional murderers and marauders for a deadly proxy war (mission still unaccomplished), their mentors decide to build a 600-mile fence with tall towers holding surveillance cameras across northern Saudi Arabia, from Kuwait to Jordan, to keep the kingdom safe .. in case the chickens decide to return home to roost. Cost unknown. Possibly in billions (from U.S. taxpayers' money). Recompense for obediently not cutting oil production ??