The US soldiers arrived by helicopter and were efficiently guarded and shown around by uniformed Kurdish militiamen. But soon afterwards the Yazidis – who had been hoping to be rescued or at least helped by the Americans – were horrified to see the US soldiers hurriedly climb back into their helicopter and fly away. The reason for their swift departure, it was revealed later in Washington, was that the officer in charge of the US detachment had spoken to his Kurdish guards and discovered that they weren’t the US-friendly peshmerga of the Kurdistan Regional Government but PKK fighters – still listed as ‘terrorists’ by the US, despite the central role they have played in helping the Yazidis and driving back Isis. It was only when Kobani was on the verge of falling that Washington accepted it had no choice but to co-operate with the PYD: it was, after all, practically the only effective force still fighting Isis on the ground.

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