Europe's leadership says final Iran deal not yet secured
No "breakthrough moment," UK says as two-year diplomatic effort enters its endgame.
Iranian FM Javad Zarif (R) waits for the start of a bilateral meeting with Germany in Palais Coburg, the venue for nuclear talks in Vienna, Austria, July 2, 2015.(photo credit: REUTERS)ByMICHAEL WILNERUpdated: