From gun trenches in the hills overlooking the Syrian town of Baghuz, US-backed Kurdish and Arab fighters known as the Syrian Democratic Forces or SDF rain down automatic weapons fire on what’s left of the Islamic State caliphate.

After being driven out of Mosul in 2017, ISIS has been pushed back – mile-by-mile, through fierce fighting – from nearly all the territory it used to control in Syria into a tiny patch of land on the Euphrates river near the border with Iraq.

SDF commanders like Adnan Afrin say the full territorial victory they’ve spent years fighting for is finally now in sight: “this sprawling organization that stunned the world has crumbled and is close to being defeated. It's been painful, and difficult – from the day Isis started to this moment...but it's ending now.”

The SDF advance has been slowed by the number of women and children that have streamed out of ISIS-controlled areas since the bombardment started. More than 60,000 people have left during the course of the siege.

On Wednesday…