It is unlikely even the CIA knows
Years ago the head of engineering at my company said we were months away from a working prototype. My ears pinged because I was in the lab a lot. So I booked down there and talked to my buddies on the project. The prototype was up and running. Saying it wasn’t was politics. Even the Mullahs might not know the truth.
Barak Obama was explicit - his nuclear pact with Iran was a win for the US because it would delay Iran's acquisition of a nuclear weapon until 2025.
Do people have no memory.