@Walter Hinteler,
At the end of the day, what are you expecting the US to do to remain friends? If we fall short, what are you expecting your leadership to do? If they fall short after all the investigating and pronouncements, what are you going to do or those in your country?
I think what Frank is getting at, and I am not sure it will work that way, at the end of the day, the US won't change too much and I imagine in all other respects the US and Germany will continue on in the same fashion as before.