Turkey has a history of claiming an EEZ way to the south of Cyprus (and also claiming an EEZ even past Crete in the Aegean), not wanting to work together and then accusing Greece of not working with them when Greece signs treaties to pass undersea cables in areas that Turkey claims as Turkish EEZ.

It's all a bit of a clusterfuck, I'm not even entirely clear on what areas Turkey claims and what areas Greece claims. Turkey also refuses to go to the ICJ to resolve this, which would have been a good solution, in my opinion.