It is not the international community that had been the problem. It has been the lack of political consensus in the Israeli political/Governement make up that has been the impediment to oeace. There is no consensus on what a just peace means in Israel. Weak coalition governements ( 39 governements so far) and each governement failed hwne it had to decide one one issue or another.Political Israeli paralysis is the biggest obstacle to peace , not the international Community.
U.S. says working on initiative to de-escalate Syria fighting, with focus on Aleppo (Reuters)
from the article: Setting Palestine's borders