Security Council resolution 2231 (2015) does not provide any mandate whatsoever to the Secretary-General or the Secretariat to determine, declare or notify Member States about the so-called reapplication of terminated resolutions. The resolution sets out a specific mechanism under operative paragraphs 11 and 12, placing the matter exclusively within the purview of the Security Council. Such conduct severely damages the trust of Member States in the office of the Secretariat and sets a dangerous precedent of politicization of the Secretariat’s role. The Islamic Republic of Iran firmly rejects the action taken by the Secretariat today as null and void, lacking any legal basis, and in direct contravention of the Charter. I would be grateful if you would circulate the present letter as a document of the Security Council.