Der Spiegel report published by Der Spiegel agency based on document leaked by Edward Snowden. GCHQ infiltrated German firms while NSA obtained a court order to spy on Germany and collected information about the chancellor in a special database. German authorities are reviewing the allegations that the NSA spied on the chancellor Angela Merkels mobile phone and conducted a large scale surveillance on the communications of German citizens. The NSA is permitted to conduct blanket surveillance in foreign countries without any requirement to submit individual cases for review by the court, whose deliberations are top secret.”]
Source: http://securityaffairs.co/wordpress/23550/hacking/gchq-nsa-spied-politics.html