Turkish President Recep Tayyip Erdogan says he is working with Moscow and Kyiv to save a deal under which Russia allowed Ukraine to ship its grain across the Black Sea. The agreement expires on July 17 unless Russia agrees to extend it -- something it has indicated being strongly against. "We are continuing our efforts to extend the agreement on the Black Sea grain corridor", he says on the sidelines of a key NATO summit in Vilnius. IMAGES AND SOUNDBITES