There are a lot of them. Why should we have surveillance on normal citizens of any country, including ours? Especially our allies...
Good one. Our interests include monitoring the sea lanes and routes from the Artic (Russian Navy etc), oil and other natural resources. Probably just need to check on it occasionally through the Embassy in Denmark. Doesn't need a lot of resources, but we can't completely ignore anyone.
If you have a better way to find the few who want to attack us, I'm all ears. There are a lot of people you can leave out, but you have to have a process to sort it out. They live among our allies, sometimes are known by our allies and often appear to be simply normal citizens.
So why are we spying on Angela Merkel or German citizens?
So why are we spying on Angela Merkel or German citizens?
If I'm not mistaken, those were taken from private security cameras located outside of businesses.
Again, why are we recording phone calls of citizens of our country and others that have committed no crimes?