TEHRAN, Sept. 20 (Xinhua) -- Iran's top security body announced on Saturday that the country's cooperation with the United Nations nuclear watchdog would be "effectively" suspended following a UN Security Council vote not to maintain the lifting of international sanctions on Tehran. The statement came from Iran's Supreme National Security Council (SNSC), detailing the outcomes of a meeting chaired by President Masoud Pezeshkian. During the meeting, the SNSC discussed what it called the "ill-considered" actions by France, Britain, and Germany -- collectively known as the E3 -- regarding Iran's nuclear program. On Friday, the UN Security Council failed to adopt a resolution that would extend sanctions relief for Iran under the 2015 nuclear deal, formally known as the Joint Comprehensive Plan of Action (JCPOA). The JCPOA has been under strain since the United States unilaterally withdrew in 2018, prompting Iran to gradually reduce compliance.