Mr. Trump’s chief envoy to the talks, Steve Witkoff, has also sent mixed signals over what the United States wants. Over the past week, he has moved from suggesting Iran could have a limited nuclear program to saying Iran needed to fully dismantle it.

Two top Israeli officials had an unannounced meeting in Paris on Friday with White House envoy Steve Witkoff to discuss the U.S.-Iran nuclear talks, three Israeli sources familiar with the meeting tell Axios.

"The Iranians are, I think, a little bit more desperate than they were in 2022, and they are faced with a very weak economy," one analyst told CNBC.