1.2 million Arabs live in Israel. Why should Palestine be 100% Jew-free?
Even though this violates a treaty they signed with Arafat in 1967.
You are hallucinating. There was no such treaty.
What proportion of these Arabs are Palestinians?
From what I have heard the Israeli settlers don't allow Palestinians into their areas. If Palestinians in Israel stopped Israelis from coming into the areas they colonised, then wouldn't the Israelis also be angry?
As I asked before; how does killing civilians, destroying houses, schools, hospitals, Police stations and electricity/water supply infrastructre, help stop future terrorism?
When were the current borders of the Palestinian territories agreed upon then?