They failed because theological problems cannot be solved by political negotiations.<p>For Jews, Israel is the promised land.<p>For Muslims, the entire universe belongs to those who follow Allah.<p>Therefore it is a zero sum game.<p>The problem with "secular" thinking about these issues is that secular people have no innate understanding of religious fanaticism and do not understand the supremacist worldview of Abrahamic faiths. Perhaps that is one reason behind their constant need for building secular narratives of history ignoring repeating patterns.