North korea is what scares me, because the path seems exactly similar to iran's one. Half-baked embargo , fear of sending soldier or bombing nuclear infrstructures, followed by half-backed agreements, leading to a country lead by insane dictator with nuclear bombs.

Only north korea had china to protect it, whereas iran has (to my knowledge) nobody wanting to risk anything for it.

And they are untouchable. Lesson for the rest. Whatever you do, by hook or by crook, get a nuclear weapon.