Iran Used Secret U.N. Records to Evade Nuclear Probes — The Wall Street Journal

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..."The allegations complicate a revival of the nuclear deal, which lifted most international sanctions on Iran given that the country halts its nuclear activities. According to Middle East intelligence officials, the documents from the IAEA were circulated between 2004 and 2006 among Iranian military, government, and nuclear program officials. The IAEA was tasked with investigating information that suggested Iran worked on nuclear weapons, however, armed with the IAEA documents Iran was likely able to cover evidence and twist narratives before the agency paid a visit. Neither the IAEA nor the Iranian government has commented on the discovery. The records accessed by Iran were allegedly among more than 10,000 documents seized by Israeli intelligence from a Tehran archive in 2018, and they have since been passed over to the US to review."...

Iran secured access to secret U.N. atomic agency reports almost two decades ago and circulated the documents among top officials who prepared cover stories and falsified a record to conceal suspected past work on nuclear weapons, according to Middle East intelligence officials and documents reviewed by The Wall Street Journal.
(Why am I not surprised? Secret apparently doesn't mean the same to the UN as it does to many of its member nations)