to have J'lem back as in ancient era the people will have to face harsh time with its neighbours. Ira which supports Hisbullah makes alliances with Syria, Turkey and Lebanon. The people of Israel will have to face the cities partially destroyed until the enemy is defeated in an upcoming war. As a preventive attack to Ira or as a responsive attack.
Russia: U.S. plan to provide air cover for Syrian rebels undermines Damascus fight on ISIS (Reuters)
from the article: Barak: Ministers' provocations over Jerusalem harming Israel's interests