What was the principle problem with British promise of Palestine to the zionists

Balfour declaration

Explanation:

Balfour declaration was known to be the statement made by the British government in 1917, to create a space or place of abode in Palestine for the Jewish people or descendants. This went further by declaring Jerusalem as the capital of Palestine. Although this decision was made known to have caused a serious unrest in the middle east, that is, it did not go well with the Arab nations.

It should be understood that the Jewish are also known as the Zionists.