Turkeys' president has announced a new push by Turkish forces and Syrian rebels aimed at capturing a town held by the Islamic State group. <br/><br/>Recep Tayyip Erdogan says the Syrian opposition forces, backed by Turkish troops and tanks, are determined to advance toward al-Bab to clear the region of terror threats. <br/><br/>The Turkish leader said today that the offensive will last until the area is no longer a threat to Turkey. <br/><br/>Last month, Turkey for the first time, sent tanks across the border into Syria to help rebels clear territory of IS militants and to contain the expansion of a Syrian Kurdish militia. <br/><br/>Erdogan's announcement comes as a fragile cease-fire, brokered by the United States and Russia and now in its seventh day, has mostly held despite numerous violations.