Video debate: Following his unprecedented third term victory in Turkey, is the position of prime minister Recep Tayyip Erdogan of the ruling Justice & Development Party (AKP) unassailable? and how do the US and Middle East view his claim to a bigger role in regional affairs? Plus why are European universities slipping down international rankings? In the chair, analysis editor Frederick Studemann debates the issues with FT colleagues David Gardner, international affairs editor, Gideon Rachman, chief foreign affairs columnist and Chris Cook, education correspondent.