The message is, if you kill 30K of your citizens, simply for protesting, we will kill you.
Whether that leads to liberation, we'll have to wait and see. But no one should shed a tear for the Ayatollah or that asshole Ahmadenijad.
Every president since 1973 when the War Powers Act was passed has called it unconstitutional. Every single one, Republican and Democrat. The Supreme Court has not ruled on it, and until they do, the Commander in Chief has broad constitutional authority for military action.