@Walter Hinteler,
Walter, thank you for providing the story given to the German people. Unfortunately it's not even close to what happened. The NSRL's are a wish list of hoped for information. I don't know what east Germany or the USSR called their wish list, but the NSRL's don't provide sources and methods. It couldn't have possibly been a surprise to our adversaries, and it wouldn't help the USSR or Stasi. But Hall provided something much more sensitive, that tipped off those countries on ways to thwart Western Efforts.
I'm actually shocked that you wonder when or if the US will ever think of Germany as a friend or partner. Our agencies have been attached at the hip for years, our citizens work side by side with yours. The US funds most of Germany's intell collection and in compliance with established agreements we share a lot of information. Our countries have cooperated in many operations that foiled terrorist attacts against German citizens, and Germany has done the same for us.
Luckily for Germany, most Americans will not be whipped into a frenzy of anti- German attitude, and I doubt they will understand the anti-America sentiments growing in Germany. Expelling the chief of station is something American policy makers are going to notice and remember when it's time to renew our agreements. If Merkle and her government want Americans out, they will have to find another way to purchase equipment and gather intell and the German people can start paying the entire bill, plus lose access to the assests of the US and post their own people to try to gain access for their own protection.
I don't know what the BND disclosed to the US, it must have been outside our agreements. If we found one of our citizens sharing something outside our agreements, our citizen would have been arrested as well. There is one hard fact that neither country can ignore, prior to reunification, East Germany worked side by side with the USSR, reunification was great for Germany, even Americans think that is good for Germany. But despite what the average German Or American citizen might think, it's going to take time to be convinced the East Germans are fully on board with being a Western style nation. It hasn't affected the agreements between our countries, but expelling a Station Chief is reminiscent of the former Soviet Block. Other than Merkle, I'm not sure how many members of her Government grew up in East Germany prior to reunification.
I've already listed the reasons I think 5 eyes can't occur, as well as why the US/German relashionship is practically the same as 5 eyes. To assume our Government doesn't value our relashionship with Germany seems insulting to me. But maybe because I've paid more attention to the vast amount of tax payer money devoted to support for Germany's protection, and I wonder if Germany assumes that regardless of events that faucet will never be shut off. It's unlikely to be turned off, but if your country wants us out, we will go.