Mounting tensions between Kurdish and Turkish troops in northern Syria have threatened to open a new front in the country’s complex war.
The two US allies have traded blame over recent clashes in the Kurdish-controlled city of Afrin.
YPG fighters say Turkish military deployments in areas under their control amount to a declaration of war.
But Ankara considers the YPG an extension of the Kurdistan Workers Party (PKK), which is outlawed in Turkey.
Al Jazeera's Mohammed Adow reports from Gaziantep, on the Turkey-Syria border.
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