11. It's their favorite logical fallacy (red herring) when this topic arises.
That said, what the other poster said is absolutely correct. If Iran were to withdraw from the NPT, then they would be on the same level as Israel (North Korea, India, and Pakistan), and continued attempt to prevent the building of nuclear weapons would be a huge double standard. Of course, you will never hear India used as the "I" country when this situation arises.