Brussels, 01/07/2013 (Agence Europe) - European leaders have expressed their concerns and disappointment following the weekend's revelation in Der Spiegel newspaper that US intelligence services, the National Security Agency (NSA), had also spied on the offices of the European Union, at the Justus Lipsius building, and in EU representation offices and a number of member state embassies in Washington. Some EU leaders were quick to spell out that the conduct of the transatlantic trade...