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.

Israel has not ruled out an attack on Iran's nuclear facilities in the coming months despite President Donald Trump telling Israeli Prime Minister Benjamin Netanyahu that the U.S. was for now unwilling to support such a move,

US and Iranian delegations will gather in Rome Saturday for a second round of high-level talks on Tehran’s nuclear program amid tempered optimism about a diplomatic way forward.