"It should be noted that as of today, the IAEA has been unable to answer the fundamental question about the status of Iran’s nuclear weapons program: do some activities continue? This absence of an answer is exemplified in its regular quarterly reports on the verification and monitoring of the JCPOA. For example, this oft-missed problem is in the IAEA’s November 2018 report: “Evaluations regarding the absence of undeclared nuclear material and activities for Iran remained on-going.” The IAEA has not yet been able to certify that Iran’s nuclear program is truly peaceful. Worsening the situation, the structure of the JCPOA and United Nations Security Council Resolution 2231 disincentivized Iran from cooperating with the IAEA to finish such an evaluation. For example, UN embargoes on conventional arms and ballistic missiles and additional sanctions sunset even if the IAEA does not reach a conclusion that Iran’s nuclear program is peaceful."
That is not "full compliance" Chris.
But then there was the discovery of the Iranian Nuclear Archive in 2018. As pointed out in the article,
"The existence and maintenance of an archive related to nuclear weapon design and manufacturing is not compatible with Iran’s legally binding nuclear nonproliferation commitments. It is difficult to see how storing and curating an extensive nuclear weapons archive focused on developing and building missile-deliverable nuclear weapons is consistent with Iran’s pledge under the JCPOA that under no circumstances will it ever seek nuclear weapons. Moreover, Iran failed to provide required design information on facilities it built, dismantled, or had under construction. There are also indications that Iran might have been undertaking activities involving nuclear material and did not report them to the IAEA. Overall, the new information raises fundamental doubts about whether Iran is complying with its comprehensive safeguards agreement, the associated Additional Protocol, the JCPOA, and even the Nuclear Non-Proliferation Treaty."
Pretty hard to argue.
Link: https://isis-online.org/isis-reports/the-iranian-nuclear-archive-implications-and-recommendations