The only reasonable definition of "work" is "stop the thing that motivated the sanction from happening". With that definition, sanctions rarely work (or if they do, not in a very effective way). Russia is still at war with Ukraine. Iran is still developing nuclear weapons. North Korea did develop nuclear weapons.
The only reasonable definition of "work" is "stop the thing that motivated the sanction from happening". With that definition, sanctions rarely work (or if they do, not in a very effective way). Russia is still at war with Ukraine. Iran is still developing nuclear weapons. North Korea did develop nuclear weapons.