US-backed Kurds launch final push against ISIL in Syria

The US-backed Syrian Democratic Forces say they are trying to push the Islamic State of Iraq and the Levant (ISIL, also known as ISIS) out of the last piece of territory it holds.

The fighting is going on near Iraq's border and 20,000 civilians have fled, including the families of ISIL fighters.

Al Jazeera's Fintan Monaghan reports.