What was the main issue during the so-called „East Berlin Espionage Affair“ in the late 1960s?

The main issue during the so-called "East Berlin Espionage Affair" in the late 1960s revolved around the activities of both East and West German intelligence agencies, particularly involving espionage and counter-espionage operations. This included the infiltration of East German institutions by West German intelligence (BND) and the subsequent capture and exposure of spies, which heightened tensions between East and West Germany. The affair illustrated the intense rivalry and distrust during the Cold War, as well as the lengths both sides went to in order to gather intelligence on each other.

Furthermore, the affair contributed to the already strained relations between East Germany and the West, inciting public and media scrutiny and affecting diplomatic interactions.