VOA英语视频：Iran Says No Return to 2015 Nuclear Deal Unless IAEA Ends Investigations

Negotiators from Iran and six world powers are reportedly close to agreeing on a revival of the 2015 nuclear deal known as the JCPOA — which saw the U.S. and Europe roll back sanctions on Iran in return for limits on Tehran’s nuclear program. But as Henry Ridgwell reports from London, there is one major hurdle to overcome.