That headline is blatant editorialising and whether or not you consider what the NSA is apparently doing as an indication they view Germany as an enemy, the text of the article does not in any way support that the NSA itself sees it that way. (in case it is modified, this is the headline as of writing: "NSA: Germany considered an enemy. Intercepting 500mill messages per month")
... sees Germany as a "military target".
You're right, I should've used "military target" instead of enemy