In a 67-word letter to Zionist leader Lord Rothschild, Arthur Balfour committed Britain to favoring 'the establishment in Palestine of a national home for the Jewish people,' while stipulating that nothing should prejudice the rights of existing non-Jewish communities. Issued amid the First World War as Britain sought Jewish support and eyed postwar control of the Middle East, the declaration became a foundational, fiercely contested document in the modern Israeli-Palestinian conflict.
The letter was short enough to fit on a single sheet of paper, yet it reshaped the twentieth century. Arthur Balfour wrote to Walter Rothschild, a leader of Britain's Jewish community, expressing his government's sympathy for Zionist aspirations while war still raged across Europe and the Ottoman Empire's grip on Palestine was crumbling.
The wording was carefully hedged: Britain favored a Jewish 'national home,' not a state, and promised to protect the civil and religious rights of 'existing non-Jewish communities' — a phrase that avoided naming Palestinian Arabs, who then made up roughly 90 percent of the population. Historians still debate Britain's motives, citing wartime strategy, sympathy among Christian Zionists in the cabinet, and a desire to preempt German overtures to Jewish opinion.
The declaration was later incorporated into the British Mandate for Palestine, encouraging Jewish immigration and settlement. For Zionists it was a diplomatic triumph; for Arab Palestinians it became a symbol of betrayal, since no one had consulted the population already living there. Its consequences — waves of migration, communal violence, and eventually the 1948 war — still ripple through the region today.
Key people: Arthur Balfour, Walter Rothschild, Chaim Weizmann