The US and Turkey are working together on military plans to clear the Islamic State (IS) group from parts of northern Syria, American officials say. They said an “Islamic State-free zone” would ensure greater stability along the Syria-Turkish border. The talks follow a major shift in Turkey’s approach to IS in recent days.

Turkey, which had been reluctant to intervene in Syria, has launched raids against IS and allowed US jets to use a Turkish base. The Turkish operations have led to tensions with Kurdish militia forces fighting IS in northern Syria. On Monday Kurdish People’s Protection Units (YPG) said Turkish tanks had shelled their fighters near the key town of Kobane. Turkey said it was investigating the YPG’s claim. MORE