As with almost everything to do with this conflict, it depends on whom you ask. Some will begin with the Romans. Others will start with the late 19th-century Jewish migration to what was then the Ottoman Empire – to escape the pogroms and other persecutions in eastern Europe – and the rise of Zionism. Or the Balfour declaration by the British government in 1917 in support of a “national home for the Jewish people” in Palestine and the ensuing conflicts with Arab communities there. But the starting point for many people is the United Nations’ vote in 1947 to partition...