I doubt your question was posed in good faith, but I'll answer it anyway. The key difference is that if the adults of Gaza return the hostages and surrender unconditionally the war stops immediately. That wasn't an option for the Jews under Nazi Germany.
As I wrote before, the only way to stop the bloodshed in the long term is for one side to have a clear victory and the other side to acknowledge defeat. When the price of continued 'resistance', aka terrorism, becomes too high for the adults in Gaza and they will hopefully surrender, and from there in the rebuilding and healing can start.
We can only hope it happens sooner rather than later, but hey, they should be the ones to care the most about their own children.