[Xylakant]

can as in "is technically and organizationally capable"? Fairly simple, especially when we're talking about the government and mobile phones. The US Embassy is about 200 meters from the Reichstag, just at the edge of the area where most of the government is located, just as the British Embassy. The Brits have a radome on the roof [1] and the Americans are reported to have hidden equipment behind fake walls [2][3]. Sufficiently sensitive equipment should give them a good reception on what most mobiles in that area do. Otherwise see the hack on belgacom: Root the provider and you have the mobile. Not all of that is legal, but I'm not certain under which law the Radome on the embassy is illegal.

[1] http://www.bing.com/maps/?v=2&where1=Wilhelmstra%C3%9Fe%2071... [2] Infrared picture of the American Embassy that claims to be an indicator http://www.spiegel.de/politik/ausland/bild-930301-561363.htm... [3] http://www.duncancampbell.org/embassy-bugging