An exiled prince and an ex-president are among the top contenders who could ascend to power in Iran if its Islamist regime topples after over four decades of repressive rule, experts told The Post.

The Biden administration put in a good word for accused National Guard murderer Rahmanullah Lakanwal four years before the horrific DC slaying, insisting he was "no threat" to national security, a jarring letter of recommendation obtained by The Post reveals.