A holocaust is a holocaust, and a war is a war. Cutting off water, food, and telling people to leave while you bomb the exits is a holocaust, not war. Use the right terminology, please.
They can stop it right away is they return the civilian children they kidnapped. You're picking a loaded term specifically to attack Israelis but this is something the Hamas aimed for intentionally when they executed and kidnapped children.
As an Israeli I don't think we're capable of doing something like that. I at least hope not.
There are civilian casualties at war. That is unavoidable. I know that even among the group of terrorists many were captured alive and one was even treated in an Israeli hospital. A mob wanted to lynch him (they were stopped) but they will be treated in military hospitals from now on.
I think the bombings are terrible. But it's very probable that we'll see a lot more die when the army comes in. Hopefully, civilian casualties will be low.