I read somewhere that Israel should be concerned about a long tunnel from Iran into Jerusalem, whereby a suicide nuclear bomber could enter the capital city of Israel and annihilate its government as well as much else besides. So, it does seem a good idea for Israel to "renovate the wall" so as to keep a close eye on what is happening underneath Temple Mount if and when hostilities start against Iran. Money well spent!
Islamic State destroys part of Syria's Temple of Bel, monitoring group says (Reuters)
from the article: Israel approves $23 million plan to renovate near Western Wall