The best response would be to re-establish the vise Trump established on Iran, including sanctions. Dry up their oil sales, and all incoming industrial supplies - except food. Iran has a large number of dissidents to support. Trump had Iran over the barrel, follow his lead.
That’s not going to happen as the Biden handlers are Obama and his ilk of Iran-lovers.
In other words, Valerie Jarret And Barack Obama won’t let Joe do it.