Erdogan warns over EU migrant deal, Ban disappointed at summit UN Secretary General Ban Ki-moon says he is disappointed most top world leaders had stayed away from the first humanitarian summit in Istanbul, saying concrete political action is now needed. Turkish President Recep Tayyip Erdogan warns the European Union that the Turkish parliament will block laws related to the landmark deal to stem the flow of migrants to Europe if Ankara is not granted its key demand of visa-free travel. IMAGES AND SOUNDBITES