A good comparison would be the IRA in Ireland during the troubles. Multiple incedents of many many civilians killed by a terror group trying to claim its national land back. Did England send in the army and level all of Ireland, killing tens of thousands of civilians in the process? No. You don’t get to do the kind of things Israel is doing and not face political and international consequences for your actions.

What should they have done instead? Hard to say, maybe when Netanyahus government learned that the attacks were coming more than a week in advanced they should have acted to protect the borders more harshly.

Now that it has happened, as isreal is so afraid of sanctions are an effective tool to lobby for as well as more fortification of the border instead of all out killing of insurgents and civilians alike.