Why did Arthur James Balfour write this letter to lord Rothschild?

Arthur James Balfour wrote the letter to Lord Rothschild in 1917 to express the British government's support for the establishment of a "national home for the Jewish people" in Palestine. This was part of the Balfour Declaration, which aimed to garner Jewish support during World War I and strengthen British influence in the Middle East. The letter reflected a broader geopolitical strategy and a response to growing nationalist movements, as well as a personal belief in the Zionist cause.