The families come in waves, trudging through the ruins of Old Mosul as Iraqi and coalition forces capture buildings one by one. They are starving and cry out for water. Children are covered in rashes. It is more than 45 degrees Celsius (113 degrees F), and dead IS fighters rot in the searing rubble. Many people have no shoes. These are Islamic State's last victims in Mosul as the militants' rule here collapses. Many of the people fleeing the city now are widely believed to be the families of IS militants, both living and dead.