"The Balfour Declaration, issued by the British government in 1917, announced Britain's promise for a "national home for the Jewish people" in Palestine, which was then under the rule of the Ottoman Empire.
The promise appeased the Zionist movement, who believe in a Jewish right to the land of Jerusalem -- or Zion.
Following the end of World War I, the region of Palestine was conceded by the Ottoman Empire and was placed under the rule of the British via a mandate from the League of Nations."
"The United Nations later adopted a resolution to split Palestine into two independent states -- a Jewish State and an Arab State with Jerusalem under UN trusteeship, despite opposition from Palestinian Arabs of the region."
Read more of the history of the region.
Britain sending ships and marines to support Israel.