TURKEY condemned its Nato ally the United States yesterday after US troops were photographed fighting alongside Kurdish militia forces in Syria.

The People’s Protection Units (YPG) confirmed that soldiers seen wearing the militia’s insignia patches in pictures taken by an AFP news agency photographer were US special forces fighting alongside guerillas battling Islamic State (Isis).

The US has some 300 commandos in Syria as advisers to the YPG, which launched an offensive against the Isis stronghold of Raqqa this week.