The Vienna International Centre, which houses the United Nations (U.N.) headquarters in the city and is a venue of the latest round of talks with Iran on its disputed nuclear programme, is pictured in Vienna July 2, 2014.
The Vienna International Centre, which houses the United Nations (U.N.) headquarters in the city and is a venue of the latest round of talks with Iran on its disputed nuclear programme, is pictured in Vienna July 2, 2014. REUTERS/Heinz-Peter Bader