Valdemar II
Banned
Greece spent most of its modern history as a virulent and genocidal ethnic national state, endured endless coups and civil wars, and was admitted just a few years after the fall of a brutal military dictatorship. This is not the best example to be giving. Despite being actually in the EU, it is more corrupt than Turkey and has a shakier economy.
Yes there's also that fact, of course that may not be the best argument for Turkish membership, that all it EU neighbours sucks, it could lead to the question will Turkey be better? Greece has been a nightmare for EU, which is also why many state dislike take more state in in the neighborhood, and I can promis you if there had been a referendrum for Romanian and Bulgarian membership, they wouldn't have been members. Only internal EU politics with France as a sponsor for Romania saved them. Turkey used to have Germany as a lurkwarm sponsor, but have under Erdodan succeded in alienate them (even if Gül still has sopme popularity), and Turkey only important sponsor today is UK, which has done its best to alienate the rest of EU with the Iraq warm and before that with the Tories charming behaviour.