The United States and Iran still have serious differences they need to bridge in talks on resuming compliance with the 2015 Iran nuclear deal, a senior U.S. State Department official said on Thursday.
The official, who spoke to reporters on condition he not be named, said the U.S. delegation expected to return to Vienna for a seventh round of talks in the not-too-distant future and if they did not reach a deal in the foreseeable future Washington would have to regroup and consider the pathway forward.