On 2 November 1917, the British Foreign Secretary, Arthur Balfour, issued a public statement in the form of a letter to Lord Rothschild, a leader of the British Jewish community. This document, which became known as the Balfour Declaration, expressed the British government's support for the establishment of a national home for the Jewish people in Palestine. At the time, the region was still part of the Ottoman Empire, and the declaration was intended to secure support for the Allied war effort during the First World War.

The declaration was carefully worded to balance competing interests and avoid undermining the rights of the existing population. It included a crucial proviso stating that nothing should be done to prejudice the civil and religious rights of existing non-Jewish communities in Palestine, nor the rights and political status enjoyed by Jews in any other country. Despite this attempt at nuance, the document created significant long-term political and social complexities in the region.

The declaration served as a pivotal moment in the history of the Middle East, fundamentally shaping the geopolitical landscape of the twentieth century. Its key implications included:

• The formal endorsement of Zionist aspirations by a major world power.
• The introduction of a new framework for the future governance of Palestine.
• The creation of conflicting expectations among various local and international stakeholders.
• The eventual incorporation of the declaration into the British Mandate for Palestine following the war.

As the conflict progressed, the declaration became a cornerstone of British policy in the region, though it remained a subject of intense debate and controversy. By publicly committing to the establishment of a Jewish national home, the British government set in motion a series of events that would influence the demographic and political development of Palestine for decades to come, ultimately leading to the end of the mandate and the subsequent transformation of the region.