Passage: The declaration had many long-lasting consequences. It greatly increased popular support for Zionism within Jewish communities worldwide, and became a core component of the British Mandate for Palestine, the founding document of Mandatory Palestine, which later became Israel and the Palestinian territories. As a result, it is considered a principal cause of the ongoing Israeli–Palestinian conflict, often described as the world's most intractable conflict. Controversy remains over a number of areas, such as whether the declaration contradicted earlier promises the British made to the Sharif of Mecca in the McMahon–Hussein correspondence.

Question: Name one area of remaining controversy.
whether the declaration contradicted earlier promises the British made to the Sharif of Mecca in the McMahon–Hussein correspondence