U.S. and Iranian officials said Tuesday an initial day of talks in Vienna on returning to the 2015 nuclear deal were "constructive," but the Biden administration cautioned that no immediate breakthroughs were anticipated on one of the new president's top foreign policy goals.
The European-led diplomatic effort featured mediators shuttling between Iranian and American envoys, a far cry from the intensive face-to-face discussions held by U.S. and Iranian diplomats who brokered the original agreement.
The goal now is agreeing on a road map toward lifting U.S. sanctions that were imposed under President Donald Trump and recommitting Tehran to its agreements under the accord, a complicated undertaking with no guarantee of success.