1) Israel doesn't have to - they can do essentially
anything, and their US/GB/DE/FR backers will continue to support and enable their genocidal behaviour
2) The Israeli army comes across as extremely unprofessional - I honestly believe Israel doesn't have full control over them. It's a car-crash of "soldiers" who believe Palestinians are inhuman beasts, combined with commanders who don't give a shit and probably couldn't control their squad in any case