What good are unbiased mediators going to do? Lets say Israel went back to its 1967 borders. Do you think Hamas would stop trying to kill Israelis and wipe Israel off the map? Do you think they would live in harmony with Israel? Would Iran stop feeding money and weapons to its proxies Hamas and Hezbollah? Good people have spent years trying to solve this problem but you'll never get past the fact that one side believes the other should be purged from the Earth, that another holocaust is what is required but this time they don't stop until they are all dead. If you can fix that maybe it could be fixed but that is never going to happen. Well not any time soon anyway and certainly not while the Islamic Republic of Iran exists in its current form.