When the Taliban controlled Afghanistan, they destroyed several holy Buddhist sites with UNESCO saying nothing for fear of offending their Islamist regulations. This is the forerunner for their desire to do the same to Jewish sites. UNESCO is simply serving to increase the beliefs by not only settlers, but moderates as well that any involvement by the UN is predetermined for the neo-Nazis and summarily dismissed.
UN experts: North Korea continues to evade UN sanctions (AP)
from the article: Israel slams 'absurd' UNESCO decision on Jerusalem, West Bank holy sites