Hezbollah's chief Hassan Nasrallah warned Saudi Arabia of the aspirations of ISIS leader, Abu Bakr Al Baghdadi, to dominate Mecca and establish his Caliphate in the region, CNN Arabic reported Tuesday. Nasrallah began his videotaped speech, broadcasted on huge screens in south Beirut Monday, by condemning the killing of 21 Egyptian Christians in Libya by IS. The Shiite leader admitted to his role in Iraq and Syria, confirming sending his militants to fight against ISIS domination in the conflict-torn countries and calling on Arab nations to join his battle against the "most immediate threat to regional stability," instead of relying on Americans. He declared that ISIS threatened not only the Arab regimes but Islam as well, claiming that Al Baghdadi sought after Mecca not Jerusalem and that the IS leader was backed by Israel, the U.S. and UK, according to him.