In northern Syria, the conflict rumbles on with seemingly no end in sight. The Islamic State (IS) group still controls large swathes of Iraq and Syria. What's more, the groups fighting against them also seem to be divided. Our team went to meet members of the main Sunni Arab force opposing the IS group: the "Sanadid", an armed formation of the Shammar tribe.
A programme prepared by Yong Chim and Elise Duffau