Not that I'm defending obummer's NSA, but do you think that the US intelligence apparatus are the only spooks that don't have their fingers in their "friend's" pudding?
Personally, I think the three letter federal agencies have devolved into a state of paranoia wherein they've completely forgotten their fundamental mission statement and are just trying to get one up on all the other foreign, evil three letter agencies around the globe.
Merkel's indignation over Snowden disclosing the fact that her sexting* has been tapped is ingenuous, or she's a rube. I doubt it's the latter.
Aside from the other "evil" three letter agencies around the globe, the thing that terrifies the US three letter agencies the most is the American People.
Together we stand. Divided, we fall.
* that is hyperbole, but the NSA probably has that on file as well.