World powers and Iran begin nuclear talks
The six - United States, Russia, China, Britain, Germany and France - are expected to offer Tehran some sanctions relief if it curbs work which they suspect is intended to produce material for nuclear weapons, although Iran denies this.
No breakthrough is expected at the talks, the first such meeting in eight months, but diplomats hope for an agreement to hold further talks soon on how to implement steps to ease the tension.
(Reporting by Justyna Pawlak, Fredrik Dahl, Yeganeh Torbati, Editing by Timothy Heritage)