Undoubtedly the German authorities would have argued that the caused of this atrocity was the murder of Richard Heydrich. They were merely responding to events.
In 1944, Sturmbannführer Otto Weidinger learned that a high ranking German offiecer had been captured by the French resistance, and was likely to be executed. On June 10th, 642 women, men and children were killed as a reprisal in the French village of Oradour-sur-Glane.
Undoubtedly the German authorities would have argued that the starting point for this chain of events was the capture of the German soldier. They would have said the attacks did not start on the German side but on the French side.
It was these events, and other Nazi atricities, that led to Article 33 of the Fourth Geneva Convention: Part III : Status and treatment of protected persons #Section I : Collective penalties and likewise all measures of intimidation or of terrorism are prohibited.
In response to two israeli soldiers being captured by Helllbollah. (Two soldiers who were being offered for prisoner exchange ands who were not even in personal danger) the Israeli air force last night bombed civilian suburbs of Beirut, or in the pro-Zionist propaganda of the BBC “Israel hits Hezbollah stronghold”. (One can almost imagine Herr Doktor Goebbels desribing the action in Lidice as “hitting a terrorist stronghold”) The BBC admits that the bombing has ”has left more than 50 Lebanese civilians dead since Wednesday”
You would think that the Nazi war crimes would have left some impression on the German government. But today what is German Chancelor, Angela Merkell’s response to the events in Lebanon and Gaza? This is what she said:
“We cannot confuse cause and effect. The starting point is the capture of the Israeli soldiers. ... it must be made clear that the capture [of the soldiers] cannot be tolerated. The attacks did not start from the Israeli side, but from Hezbollah's side. “