Nothing. I spent some time recently reading all 36 Articles of the Hamas Covenant of 1988. Scary

. They will not allow it. There will be no resolution until they reach their goal which is getting rid of all Jews and other infidels. I won't paste all 36 articles, but Article 13 says:
Initiatives, and so-called peaceful solutions and international conferences, are in contradiction to the principles of the Islamic Resistance Movement.
(And later in #13: ) There is no solution for the Palestinian question except through Jihad. Initiatives, proposals and international conferences are all a waste of time and vain endeavors. The Palestinian people know better than to consent to having their future, rights and fate toyed with.
Side note/question... why the heck am I reading quotes from Abbas here?! Perhaps all the bleeding hearts who are wanting to tuck tail and run away to wait for the next attack should read the Covenant and see what's REALLY going on.