If I were Obama I would be concerned about the image and the title ("DAS NEST"") of the article in "Der Spiegel" - see image on linked site. "Das nest" is most likely chosen as a not so suttle reminder about another nest called "eagles nest".
As another article wrote, USA is loosing the moral standpoint - this is not war against terror, it's spying on what used to be allied friends.
I'm going to be laughing my ass off when it's reveiled that the embassy in The Hague is also a listening post. It's a ridiulously fortified building with a near direct line of sight to the prime minister's private offices along the Hofvijver. We were all so gullible...