Ali Larijani, secretary of the Iranian Supreme Council for National Security, recently said:
Article 11 of the NPT states that if we are threatened, we can act in secret. If you want our activity to be transparent, you should not use the Security Council as leverage for your own benefit. If you do so, then according to the NPT, we are required to act in secret, in the face of your threat.
Meanwhile, back in the real world, what Article 11 of the NPT actually says is, "This Treaty, the English, Russian, French, Spanish and Chinese texts of which are equally authentic, shall be deposited in the archives of the Depositary Governments. Duly certified copies of this Treaty shall be transmitted by the Depositary Governments to the Governments of the signatory and acceding States."