I said this before, but I think third party intervention is needed in case of I/P. 2ss won’t work, and 1ss won’t work. So, that leaves third party intervention as the only viable option. I’d personally would carve a little of Israel’s territory, a little of Palestine’s territory. Then evacuate Israelis and Palestinians. Then place a strong military and have a justice system which involves extrajudicial arrests and investigations. Then negotiations can start.