Arab rejection of Israel's right to exist is the root cause of the Arab-Israeli conflict. The repeated rejection of the two-state solution since 1937 by Haj Amin Al-Husseini and later by Hamas, Islamic Jihad and Hizbullah, and by the Palestinian Liberation Organization (PLO) - lies at the heart of the Arab-Israeli conflict. The reason for such rejection is that most Arab and Muslim leaders cared more about denying the Jews the right of self-determination in those areas of Palestine in which they were a majority, than in exercising their own right of self-determination in those areas with a Muslim majority.