Germans' negligence and ineptitude exposed

 The Israeli and German documents clarify the picture to a large extent, revealing why Germany did not do everything it could to foil the terror attack, rescue the hostages successfully and punish the terrorists after the affair. The reasons for the Germans' conduct are both political and diplomatic. The German documents show the country was sympathetic to the Palestinian national struggle and not all the officials in its foreign ministry saw the attack as a terror act. Some of them saw it as an act of "resistance."
This could explain why the German government did not go out of its way to prevent the attack, or stop it once it began.
Germany, Israel still conceal facts about massacre - Israel News | Haaretz Daily Newspaper