Iran's top diplomat said Sunday that cooperation with the United Nations nuclear watchdog was no longer relevant following the reimposition of international sanctions on the Islamic republic.

"The Cairo agreement is no longer relevant for our cooperation with the IAEA (International Atomic Energy Agency)," Foreign Minister Abbas Araghchi said, referring to a September deal with the UN agency.

The deal had set up a framework to resume cooperation and allow the watchdog to inspect Iranian sites, after Tehran suspended cooperation following Israeli and US strikes on its key nuclear sites in June.

But the agreement lost its significance to Iran as Britain, France, and Germany -- signatories to Iran's 2015 nuclear deal -- triggered the return of the UN sanctions over Tehran's non-compliance.

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