Western European nations’ move to reimpose sanctions has derailed a recent monitoring agreement, Tehran has said Iran’s top security body has announced the suspension of nuclear cooperation with the International Atomic Energy Agency (IAEA), citing actions by Western European nations against the Islamic Republic.On Friday, the UN Security Council voted to reimpose sanctions on Iran, which had been suspended in return for curbs on its nuclear program in a 2015 deal. The so-called “snapback” mechanism was initiated by Britain, France, and Germany last month.“The ill-considered actions of three European countries regarding the Iranian nuclear issue… will effectively suspend the path of cooperation with the Agency,” Iran’s Supreme National Security Council said in a statement cited by state news agency IRNA.The European nations took these steps despite the Iranian Foreign Ministry’s cooperation with the UN nuclear watchdog and “the presentation of plans to resolve the issue," it said.Earlier this month, Tehran and the IAEA reached an agreement that would have allowed the organization to resume inspections of Iranian nuclear facilities. Iran had suspended them after Israel and then the US attacked its nuclear sites, accusing it of developing a nuclear bomb – accusations the Islamic Republic has consistently denied. READ MORE: Missiles don’t lie: What this region’s rocket stockpiles say about the next war Iran had previously agreed to restrict its nuclear program in return for sanctions relief under the 2015 Joint Comprehensive Plan of Action (JCPOA), which it signed with Russia, China, the US, France, Britain, Germany and the EU. However, the deal effectively collapsed when Washington unilaterally withdrew in 2018, during President Donald Trump’s first term. Read more US revokes sanctions waiver on India for key Iran port On August 28, Britain, France, and Germany triggered the JCPOA’s 30-day “snapback” mechanism, designed to reimpose sanctions frozen under the accord. Friday’s UNSC vote means the measures will take effect on September 28.At the session, the Russian envoy to council, Vassily Nebenzia, stressed that Moscow does not recognize the decision. The E3 has “chronically” violated their JCPOA obligations and failed to follow the dispute mechanism, he said.“In our view, no snapback procedure is taking place,” Nebenzia said, adding that “the Russian Federation does not recognize either the alleged steps taken or any further steps in this context.”