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
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