Watch list does not mean “watch it happen”.
It should graduate to catch, snatch, watch them sail or fly away forever.
Watch List entries mean “problem solved” to the PC popos and gov’t lackies. Hey, we put him on the list. No more responsibility on our part....
Like the C-130 "death flights" during Argentina's dirty war. France has experience with this tactic against Algerian insurgents. It could happen.