If this is the difficulty that they have in just getting negotiations off the ground, what chance is there that either side could actually successfully implement the difficult compromises they might finally agree to. I'd say it's near zero. It will take America with a coalition of interested parties from the international community to largely impose a peace with boots on the ground. It would take a no nonsense approach with israel regarding settlements, and a disarming of "illegal" or "unauthorized" armed groups among the Palestinians on the West Bank and Gaza, and a Palestinian trusteeship of sorts that would lead to independence. The US is really has no will and less ability to do this today than it has in many years.
U.S. confirms ISIS computer expert killed in air strike (Reuters)
from the article: Netanyahu seen unlikely to accept U.S. compromise in Mideast talks