iirc it wasn’t exactly banned in germany. Iirc the state of bavaria held the copyright and sued everyone who sold the book without their consent, while not printing any copies themselves.
There’s much more to this ugly story, all available at your local library. It can’t be said to be the worst thing that Kissinger ever did — but as you remember the extraordinary bill of indictment for him, make sure to leave a little room for it.
Kissinger was deemed a controversial figure in the Arab world for his role in shaping US foreign policy, particularly towards the Middle East. For many, his actions fuelled instability, favoured strategic interests over moral principles and left a legacy of geopolitical manoeuvring at the expense of justice and human rights.
tldr: the case was dropped because not a single witness could be found that would confirm any of those sexual assault allegations in front of police/prosecution