The heroes who crushed ISIS into bones: Ten years ago the men and women of Kobani liberated the city in a bloody battle against fanatics - with skulls and spines still among the rubble. But now Islamic State could return in a matter of days ○

'Look - here's a human spine. That's an ISIS spine.' The absurd sentences reverberated in my brain as I turned to see my Kurdish guide holding out a collection of bones he'd dug up from rubble