"This is going to involve discussions about identifying the steps that the U.S. has to take and identifying the steps that Iran is going to have to take."
"The official said Tehran will further reduce its commitments under the 2015 nuclear deal if the US does not lift all sanctions, warning that Washington is rapidly running out of ...
"Well, at some point, presumably, if there's going to be any engagement on this, that would have to require diplomacy. That's what we're in the business of."
Iran in January said it has resumed 20% uranium enrichment at its underground Fordow nuclear site, well above the deal's limit but far short of the 90% that is weapons-grade.