Some solution has to be found. If Israel just empties Palestine of Palestinians and claims it all as Israel, that won’t give them the safety they want from attacks by nutters. The crazy thing that is, there are right wing nutters in Israel wanting to exactly that. Ethnic cleansing is no way to peace. Even the US won’t support them doing that. Even doing it salami slicing with nutty settlers isn’t going unnoticed.
There needs to be a justice system to deal with nutters. You can’t deal with harsh collective punishment. It’s a nutters response that just creates more nutters on the other side. Which nutters of the side partly want to justify their own nuttiness and to create more of them on their own side.