Tukey will never enter the EU. The EU is based on Christian rules and way of life. The huge muslim state of Turkey can't join and the powerful countries like UK, France and Germany disagree with Turkey. After all Turkey is 80 Millions and will take most of the seats in EU parliament after Germany. Russia are cool the way they are and they won't enter an alliance with countries which are with better economy then them. Russia likes to be the big boss like they were in USSR.
Actually I read a few months back that British PM David Cameron offered support to Turkey for EU membership. Edit: Found the article and hyper-linked above
I was moderately for Turkey's entry into the EU a few years ago, but Turkey has slid so far back into the Islamic dark ages in the last few years that I simply cannot imagine them gaining EU membership at this time.
Turkey also has a huge problem whit Cyprus , although things have cooled off this day the situation is still ages away from being solved . I guess the fact that some Turks are still trying to keep Turkey a secular state and that fact that is a member of NATO is what stops Turkey from turning into another extremists slum .