Want to discuss? Please read our first.AdvertisementClose XAAand world powers held what they described as “constructive” talks on Tuesday and agreed to form working groups to discuss the sanctions Washington might lift and the nuclear curbs Tehran might observe as they try to revive the 2015While longtime foes the and Iran say they do not expect any quick breakthroughs, and Tehran rejects face-to-face talks for now, both governments and the EU described the early exchanges in positive terms.European intermediaries have started shuttling between Iranian and U.S. officials in Vienna as they...…Want to discuss? Please read our first.AdvertisementClose XAAand world powers held what they described as “constructive” talks on Tuesday and agreed to form working groups to discuss the sanctions Washington might lift and the nuclear curbs Tehran might observe as they try to revive the 2015While longtime foes the and Iran say they do not expect any quick breakthroughs, and Tehran rejects face-to-face talks for now, both governments and the EU described the early exchanges in positive terms.European intermediaries have started shuttling between Iranian and U.S. officials in Vienna as they...WW…