>>>Had Germany surrendered, conditionally, in July 1944 (as would have happened had Rommel replaced Hitler as Fuhrer had the July 20 putsch been successful), perhaps a million Jewish lives would have been saved
Even assuming that assessment is true were HAMAS to surrender conditionally many Jewish lives would be saved too. But they aren’t offering any type of conditional surrender that would come together with an permanent end to hostilities. As such there is no reason not to demand an unconditional surrender from them.
>>>And arguably insistence of unconditional surrendered discouraged many Germans from supporting the various anti-Hitler conspiracies.
Again even if true in the current situation the oppisite. The longer the war continues and the more Gazans suffer the less motive they have to support Hamas in the future. If the war stops and Hamas claims victory (which they will do no matter how it ends – the question is how convincing of a case they can make ) they will have a much easier time recruiting in the future. Both in Gaza and from their foreign supporters. Even Iran and Qatar may have second thoughts before pouring billions more dollars into them if all they can show is the majority of the buildings being destroyed and 40,000 dead Gazans
>>>Israel has room to negotiate something gets the surviving hostages (if any) back, disarms Hamas, and leads to Gaza being controlled by someone who won’t be sponsoring terrorism.
Who are those negotiations supposed to be with? Who that has ability is willing to do so?