“Snapback, which is going to have – if it happens – a huge impact in terms of economic sanctions and other things, it’s one process," Grossi said, referring to UN sanctions on Iran invoked by European states which are due to resume on Sept. 28.
"Then we have something which is the relationship between the IAEA and Iran, which, in principle, must be permanent and not be contingent on the snap back being activated,” he said in an interview with Al Jazeera English.
"There is an ongoing cooperation. Is it all that we would aspire to get? Not now, but we are, I hope, on a way to get more of that cooperation. And so time for diplomacy is needed, yes,” Grossi added.
Robust diplomatic efforts which involve the United States are afoot to resolve the impasse, the IAEA chief said.
“Iran, for one, has said that this might affect the relationship and the cooperation with us,” he said, adding that “there is so much diplomatic activity… between those countries, ourselves, the United States as well, to try to find a way forward.”