Aircraft factories, munitions factories, forges, steel refineries: all wiped out systematically to reduce the enemy’s ability to wage war.

But to your point… this is not those days.

Diplomacy in Iran particularly since 1979 has rarely accomplished anything beyond a stalling tactic. The current regime has never been open to changing anything as a result of diplomacy. The world has grown tired of the bully. It's time for their regime to go one way or another.

Diplomacy generally doesn't work until neither side gains by extending the conflict.