> If Israel believes they are genocidal terrorists that won't surrender why are they even negotiating?
One reason would be to try and get back as many hostages as possible, regardless of whether or not the terrorists surrender.
> You either negotiate or you attack the people you want to negotiate with. Not both
One can still attack an enemy while negotiating with them, I see no reason one would have to pick one option over the other.
It's not at all uncommon to negotiate with ones enemies while you attack them(including trying to kill them). If Israel explicitly gave the enemy representatives they were negotiating with diplomatic immunity then one might have a better argument against attacking those with immunity, but that was AFAIU not the case here.
One reason would be to try and get back as many hostages as possible, regardless of whether or not the terrorists surrender.
> You either negotiate or you attack the people you want to negotiate with. Not both
One can still attack an enemy while negotiating with them, I see no reason one would have to pick one option over the other.
It's not at all uncommon to negotiate with ones enemies while you attack them(including trying to kill them). If Israel explicitly gave the enemy representatives they were negotiating with diplomatic immunity then one might have a better argument against attacking those with immunity, but that was AFAIU not the case here.