VIENNA — The clouds of Vienna resemble the status of the talks taking place under its sky. For a moment it’s almost going to rain, and then the sun shines as it should on a normal midsummer day. Still, only a few negotiators are getting outside the closed doors at Palais Coburg, where Iran and six world powers are having what should be their last round of talks.
Everyone is waiting for a Vatican-like "puff of white smoke" that might bring 3½ decades of tension between the United States and the Islamic Republic of Iran to a happy ending.