Many tensions have bedevilled NATO’s military operations in Libya – tensions between France and NATO, between Germany and its allies, and between active and less active partners in the coalition. But it is the clash between Turkey and France that should most worry the EU. This is more serious than their difference of approach on military intervention to Muslim countries. A strategic rivalry is emerging that is compromising the ability of the West to respond cohesively and effectively to emerging threats. And this rivalry is damaging the EU’s relationship with Turkey at a moment when both have much to gain by working together in the southern Mediterranean.