When the stupid Yanks opted out of the JCPOA and introduced sanctions on Iran, Iran under the snapback provisions of the JCPOA was quite within it’s rights to further enrich uranium.
If the IAEA goes after anyone, it should be the Yanks.
Btw, why isn’t the IAEA pressuring Israel to allow access to it’s nuclear sites? I believe all they will find is COBWEBS. Israel has NO NUCLEAR WEAPONS, the Vanunu Affair was a Mossad Psyops operation.