Addressing the IAEA board of Governors, the U.S. representative affirmed that “we are prepared to lift all sanctions that are inconsistent with the JCPOA if Iran resumes compliance with all of its commitments under the deal. But all participants need to be realistic. The opportunity to return to full mutual compliance with the JCPOA will not last forever”. Referring to Iran’s “significant expansions of its nuclear program beyond JCPOA limits”, he asserted that “such escalations also bring us closer to the point where a mutual return to compliance would fail to reproduce the nonproliferation benefits the JCPOA originally delivered”. The envoy further emphasised that “the onus must be on Tehran to do its part” in cooperating with the IAEA, urging Tehran “to implement the monitoring and verification measures included in the deal… [and] quickly return to the negotiating table”. The following day, the U.S. representative noted “Iran’s failure to provide required clarifications in response to the Agency’s questions concerning the correctness and completeness of Iran’s safeguards declarations”, further stating that Tehran’s “decision to cease implementing the provisions of its Additional Protocol only adds to our serious concern”. He further underscored that “the U.S. will stand ready, with other Board members, to take appropriate action if the Director General reports that Iran’s cooperation remains insufficient”.