Here are a few lines from the ruling (pictured below):
"The Torah of Israel guides us in all walks of life, private and public, on how to behave during war and also how to keep moral standards.
The Maharal from Prague (Rabbi Judah Loew - A.K.), in his book Gur Arye, clearly writes that... in all wars the attacked people are allowed to attack fiercely the people from whom the attackers came from and they do not have to check if he personally belongs to the fighters.
Therefore, during war the attacked people are allowed to punish the enemy population in any punishment it finds worthy, such as denying supplies or electricity and also to bomb the whole area according to the discretion of the army minister and not to just simply endanger soldier's lives but to take crushing deterrence steps to exterminate the enemy.
In the case of Gaza, the Minister of Defense will be allowed to instruct even the destruction of Gaza so that the south will no longer suffer and to avoid harm to our people who have been suffering for so long from the surrounding enemies.
Any kind of talk about humanism and consideration are moot when speaking of saving our brothers in the south and in the rest of the country and bringing back quiet to our country."